Solar cells have been developed primarily to ____ electric power for spacecraft. A、ensureB、storeC、secureD、provide

题目内容（请给出正确答案）

Solar cells have been developed primarily to ____ electric power for spacecraft.

A、ensure

B、store

C、secure

D、provide

参考答案

考题 The film in my camera is finisheD.I need to get it _____. A.cutB.cleaningD.to testD.developed

查看答案

考题 How long() you() a member of the club? A.have,,joinedB.have,,beenC.has,,joinedD.has,,been

查看答案

考题 Where ________ you ________?A.are/beB.have/beC.is/beD.have/been

查看答案

考题 Why()the old block of flats()demolished next month? A、are…beingB、is…beingC、has…beenD、have…been

查看答案

考题 The political situation in the region has deteriorated rapidly.A: improved B: changed C: worsened D:developed

查看答案

考题 Many forms of cancer can be cured if detected early.A:discoveredB:selectedC:operatedD:developed

查看答案

考题 He advanced a novel theory during the seminar.A:moved B:invented C:furnished D:developed

查看答案

考题 One-room schoolhouse can still be found in isolated areas of North America.A:bare B:deprived C:remote D:developed

查看答案

考题 2、细胞计数法一般用血球计数板，以什么来表示？A．cells/mLB．cells/LC．cells/μLD．cells/100mL

查看答案

考题细胞计数法一般用血球计数板，以什么来表示？A．cells/mLB．cells/LC．cells/μLD．cells/100mL

查看答案

热门标签