E.a fraCtion of an inCh
F.the tiniest partiCle
28、When a large star explodes, the gravity CompaCts ever pieCe into__________.
A.the existenCe of blaCk holes
B.the Creation of renew entities
C.the same amount of mass
D.an explosion of huge stars
E.a fraCtion of an inCh
F.the tiniest partiCle
29、A newly formed blaCk hole and the star it Comes from are of__________.
A.the existenCe of blaCk holes
B.the Creation of renew entities
C.the same amount of mass
D.an explosion of huge stars
E.a fraCtion of an inCh
F.the tiniest partiCle
30、Albert Einsteins theory of relativity helps to prove__________.
A.the existenCe of blaCk holes
B.the Creation of renew entities
C.the same amount of mass
D.an explosion of huge stars
E.a fraCtion of an inCh
F.the tiniest partiCle
第4部分:阅读理解(第3145题,每题3分,共45分) 下面有3篇短文,每篇短文后有5道题。请根据短文内容,为每题确定1个最佳选项。
31、根据材料,完成31-36题。
第一篇
Energy and Public Lands
The United States boasts substantial energy resources. Federal lands provide a good deal of US energy production, the US Department of the Interior manages federal energy leasing (租赁) both on land and on the offshore Outer continental Shelf Production from these sources mounts to nearly 30 percent of total annual US energy production.
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