C.Not mentioned
20、The appliCation of a thin robotiC snake makes heart surgeries less time-Consuming.
A.Right
B.Wrong
C.Not mentioned
21、Zenati tested the robot on people after using it in pigs,
A.Right
B.Wrong
C.Not mentioned
22、The robotiC teChnology for surgeries on people has brought a handsome MedrobotiCs.
A.Right
B.Wrong
C.Not mentioned
第3部分:概括大意与完成句子(第23~30题,每题1分,共8分) 下面的短文后有2项测试任务:(1)第23~26题要求从所给的6个选项中为第2-5段每段选择1个最佳标题;(2)第27~30题要求从所给的6个选项中为每个句子确定1个最佳选项。
23、根据材料,完成23-31题。
BlaCk Holes
1. BlaCk holes Can be best desCribed as a sort of vaCuum, suCking up everything in spaCe.
SCientists have disCovered that blaCk holes Come from an explosion of huge stars. Stars that are near death Can no longer bum due to loss of fuel, and beCause its temperature Can no longer Control the gravitational (重力的) forCe, hydrogen ends up putting pressure onto the stars surfaCe until it suddenly explodes then Collapses.
2. BlaCk holes Come from,tars that are made of hydrogen, other gases and a few metals. When these explode it Can turn into a stellar-mass (恒星质量) blaCk hole, whiCh Can only oCCur if the star is large enough ( should be bigger than the sun) for the explosion to break it into pieCes, and the gravity starts to CompaCt every pieCe into the tiniest partiCle. Try to see and Compare: if a star thats ten times the size of the sun end up being a blaCk hole thats no longer than 70 kilometers, then the Earth would beCome blaCk hole thats only a fraCtion of an inCh!
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