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单选题
This passage is mainly about ______.
A
deforestation in the rural agricultural societies
B
use of rice husks as an insulation material
C
design and use of a solar oven
D
maintenance of temperature in a solar oven
参考答案
参考解析
解析：
文章第一段首先描述到偏远地区收集能源的方式不仅费时费力而且造成一系列环境问题等，第二段指出考虑到这些问题，印度的一个团队已经制作出家用的solar oven（太阳能灶），接着该段便对太阳能灶的设计和工作原理进行了介绍，因此C项最能概括文章的主要内容。
文章第一段首先描述到偏远地区收集能源的方式不仅费时费力而且造成一系列环境问题等，第二段指出考虑到这些问题，印度的一个团队已经制作出家用的solar oven（太阳能灶），接着该段便对太阳能灶的设计和工作原理进行了介绍，因此C项最能概括文章的主要内容。
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考题
单选题Oil is a nonrenewable resource, whereas sunshine is limitless. So why not run cars on solar power? Because a car powered by solar collecting panels would be fine on a sunny day, but as soon as the sun went behind a cloud, the car would no longer function. Which of the following is presupposed in the argument against running a car on solar power?A
Solar power is cleaner than fossil fuels, and it involves less geopolitical risk.B
In most of the northern hemisphere, it can be expected that more than 150 days a year will be cloudy.C
No system exists for storing solar energy for a car’s use when the car is not in direct sunlight.D
No one has yet introduced a commercially viable process for mass-producing solar cells that convert more than 10 percent of incoming sunlight into usable energy.E
Consumers accustomed to the rapid acceleration of gasoline-powered cars will not accept the weak acceleration of solar-powered cars.
考题
单选题According to the passage9 which of the following statements is NOT TRUE?A
Solar panels are very expensive to install.B
Sheridan Community Schools is completely solar-powered.C
In 2014, fewer than l,000 schools used solar power in the US.D
More and more schools are switching to solar power to cut costs.
考题
单选题The passage is about the use of energy from ______.A
the sunB
the windC
the waterD
the oil
考题
单选题According to the passage, the use of an adjustable mirror increases the oven temperature by ______.A
80-120 degrees CelsiusB
at least 80 degrees CelsiusC
up to 30 degrees CelsiusD
up to 15 degrees Celsius
考题
单选题It can be concluded from the passage that ______.A
it is hopeful to bring solar energy into average householdsB
it is feasible to use nuclear energy to run home appliancesC
it is economical to use water to heat housesD
it is possible to use wind to power machines
考题
单选题According to the passage, the greatest part of the solar energy that reaches the Earth is _____.A
reflected back to space by snow and iceB
concentrated at visible wavelengthsC
absorbed by carbon dioxide moleculesD
absorbed by atmospheric water vapor
考题
单选题According to the passage, which of the following is TRUE?A
Cell phone use is dangerous.B
Cell phone use causes cancer.C
The human brain is an electromagnetic field.D
There are about 5 billion cell phone users in the world right now.
考题
单选题According to the passage, solar energy has the following benefits EXCEPT that______.A
it creates no pollutionB
it can save moneyC
solar panels are easy to maintainD
solar energy is renewable
考题
单选题Very soon you will be performing maintenance operations. You would have several jobs to run as soon as the maintenance period starts. Which method would you use to create jobs without specifying the time period when the job should be run？（）A
use DBMS_IJOB packageB
use Oracle SchedulerC
use DBMS_JOB packageD
use Oracle Data Pump Export and Import
考题
单选题A mean sun is used as the reference for solar time for three reasons. Which reason is NOT a cause for use of a mean sun?（）A
The motion of the apparent sun is along the eclipticB
Measurement of time is along the celestial equatorC
The speed of the Earth's revolution is not constantD
There are variations in the Earth's rotational speed
考题
单选题What is the fourth paragraph of the passage mainly about?A
The ways to use solar power.B
The advantages of solar power.C
The places to build the solar power plants.D
The difficulties of putting solar power to use widely.
考题
单选题We learn from the passage that ______.A
all living things on the earth depend on the sun for their foodB
a forest looks dark in winter because it absorbs solar energyC
only 0.023 of the energy from the sun is made use of on the earthD
greenhouse gases allow heat energy to escape from the earth’ s surface
考题
单选题A sidereal day is shorter than a solar day. This difference is due to（）.A
irregularities in the daily rotational rate of the SunB
the space motion of the solar systemC
the precession of the equinoxesD
the use of different reference points
考题
单选题Which point is Mr. Pat NOT concerned about?A
Coverage of environmental oppositionB
The article's figure of 75％C
Technical terminology related to the projectD
The article's doubts about solar power output
考题
问答题Practice 3 You should spend about 40 minutes on this task. Write about the following topic: Fossil fuels, such as coal, oil, natural gas, are used in many countries. But in some countries, the use of alternative sources of energy, including wind and solar power, are encouraged. Is this trend a positive or a negative development? You should write at least 250 words.
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