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单选题
Supposing 1 million leukemia cells were killed after 24 hours of exposure to radio waves, how many healthy cells would be killed under the same condition?
A
1.2 million.
B
1.4 million.
C
0.8 million.
D
2 million.
参考答案
参考解析
解析：
数字的找寻和判断。录音中提到“In the Italian study, after 24 hours 20 percent mole leukemia cells died than healthy cells but longer exposure to the radio waves triggered…”，可知暴露在无线电波之下24小时，被杀死的白血病细胞比正常细胞数量多出20%。也就是说，如果有1 million（100万）个白血病细胞被杀死，同时也有0.8 million（80万）的正常细胞被杀死。因此选C。
数字的找寻和判断。录音中提到“In the Italian study, after 24 hours 20 percent mole leukemia cells died than healthy cells but longer exposure to the radio waves triggered…”，可知暴露在无线电波之下24小时，被杀死的白血病细胞比正常细胞数量多出20%。也就是说，如果有1 million（100万）个白血病细胞被杀死，同时也有0.8 million（80万）的正常细胞被杀死。因此选C。
更多 “单选题Supposing 1 million leukemia cells were killed after 24 hours of exposure to radio waves, how many healthy cells would be killed under the same condition?A 1.2 million.B 1.4 million.C 0.8 million.D 2 million.” 相关考题
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LeukemiaLeukemia is the most common type of cancer kids get,but it is still very rare.Leukemia involves the blood and blood-forming organs,such as the bone marrow.________(46)A kid with leukemia produces lots of abnormal white blood cells in the bone marrow. Usually,white blood cells fight infection,but the white blood cells in a person with leukemia don't work the way they're supposed to.________(47)The abnormal white blood cells multiply out of control,filling the bone marrow and making it hard for enough normal,infection-fighting white blood cells to form.Other blood cells一such asred blood cells(that carry oxygen in the blood to the body's tissues)and platelets(that allow blood to clot）一are also crowded out by the white blood cells of leukemia. These cancer cells may also move to other parts of the body,including the bloodstream,where they continue to multiply and build up.Although leukemia can make kids sick,most of the time it is treatable,and kids get better. Almost all leukemia patients are treated with chemotherapy,which means using anti-cancer drug.________(48)Chemotherapy quickly goes to work,traveling through the blood to the bone marrow. There,the drugs can attack the cancer cells.After several weeks of chemotherapy,many kids begin to feel better.Some children with leukemia will also have to have radiation therapy,too.________(49)If the cancer isn't getting better from using the usual amounts of chemotherapy and radiation,then a kid with leukemia will probably need more treatment一with higher doses of chemotherapy and radiation to finally kill the cancer cells.But this heavy-duty treatment will also harm the normal cells in the kid's bone marrow too,and the bone marrow will no longer be able to produce normal blood cells.So,doctors will then give a kid一or anyone else with bone marrow that is no longer working一normal bone marrow tissue from someone else who is healthy.________(50)___________（50）A:The chemotherapy drugs are given through a catheter,a narrow tube that is inserted into a blood vessel, sometimes in the kid's upper chest.B:Early symptoms of leukemia are often overlooked,since they may resemble symptoms of the flu or other common diseases.C:This is a special procedure called a bone marrow transplant,and it helps the patient make new blood cells so they can recover from the leukemia.D:Bone marrow is the innermost part of some bones where blood cells are first made.E:They don't protect the person from infections very well.F: Radiation therapy uses invisible high-energy waves(similar to X-rays)to kill cancerous cells.
考题
The earliest immigrants to North America found Indians already living there．The Indians numbered about 500,000 at that time．Their society was a primitive society,but they lived peacefully and welcomed the white strangers to the land．However,these early immigrants from Europe didn't want to share the land with the natives．They killed off many of the Indians,seized their land or pushed them off to lands farther away．Today the Indians,not more than half a million,live in poverty and misery on the land on which they were once masters.
The earliest immigrants were the Spanish,who settled in the southern part of what is now the US．The next large group were the English,after the English came the French,Dutch,Irish,Germans,and other nationality groups,mostly European.
Another early group to arrive were the Negroes．But they were brought in as slaves from Africa．They didn't win freedom till generations later.
Which is the best title of this passage?A.The Earliest People in North Americ
B.The Earliest Immigrants to North Americ
C.The People of the United State
D.Europeans were the Earliest People Coming to the North Americ
考题
The earliest immigrants to North America found Indians already living there．The Indians numbered about 500,000 at that time．Their society was a primitive society,but they lived peacefully and welcomed the white strangers to the land．However,these early immigrants from Europe didn't want to share the land with the natives．They killed off many of the Indians,seized their land or pushed them off to lands farther away．Today the Indians,not more than half a million,live in poverty and misery on the land on which they were once masters.
The earliest immigrants were the Spanish,who settled in the southern part of what is now the US．The next large group were the English,after the English came the French,Dutch,Irish,Germans,and other nationality groups,mostly European.
Another early group to arrive were the Negroes．But they were brought in as slaves from Africa．They didn't win freedom till generations later.
Who were the earliest people living in North America?A.The Spanis
B.The Englis
C.The Negroe
D.The Indian
考题
The earliest immigrants to North America found Indians already living there．The Indians numbered about 500,000 at that time．Their society was a primitive society,but they lived peacefully and welcomed the white strangers to the land．However,these early immigrants from Europe didn't want to share the land with the natives．They killed off many of the Indians,seized their land or pushed them off to lands farther away．Today the Indians,not more than half a million,live in poverty and misery on the land on which they were once masters.
The earliest immigrants were the Spanish,who settled in the southern part of what is now the US．The next large group were the English,after the English came the French,Dutch,Irish,Germans,and other nationality groups,mostly European.
Another early group to arrive were the Negroes．But they were brought in as slaves from Africa．They didn't win freedom till generations later.
According to this passage,which of the following is true?A.The Negroes came to North America in order to work for the earliest immigrant
B.The Negroes also belonged to the earliest immigrants to the North Americ
C.The Negroes were brought to America by chanc
D.The Negroes didn't win freedom until no
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共用题干
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考题
共用题干
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共用题干
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共用题干
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共用题干
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About 10 million,B
About 9 million,C
About 1 million,D
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EconomistsB
FrmaersC
PoliticiansD
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They were killed in the explosion.B
They survived but were badly burned.C
They died shortly after reaching the beach.D
They were blown off the ship and swam ashore.
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单选题How many people were killed in the accident in addition to Robert Sanchez? A
25.B
24.C
130.
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Five hostages were killed.B
Twenty-five hostages were released.C
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判断题On a global scale people killed or injured by violent acts come close to 1.6 million.A
对B
错
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单选题Time Picker控件24小时设定的方法是？（）A
Setls 24 Hour View（）B
Setls 24 Hour View（true）C
Setls 24 Hour View（1）
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