Đề 15

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1) Before 8000 B. C. wheat did not grow as prolifically --- it does today.
a) like b) as c) for d) than

 
2) Both nickel and iron are whitish metals ---.
a) that are attracted by magnets b) that magnets are attracted by them c) are attracted by magnets d) magnets that attract them

3) The bark of some species of oak trees yields a substance used in --- leather.
a) treating b) to treat c) its treatment d) it treats

4)Although phosphorus is an essential constituent of all living creatures, ---is among the least abundant of the mineral nutrients
a) what b) it c) still d) however

5) . ---- angles of any triangle always add up to 180 degrees
a) If three b) The three c) Three of d) Three are

6) The gibbon ranges over ---- other apes do.
a) than an area wider b) wider than the area c) a wider area than d) an area wider than are

7) Sarah Frances Whiting opened the --- of physics in the United States in 1878.
a) undergraduate teaching was in a second laboratory b) second teaching laboratory of undergraduate c) undergraduate teaching laboratory was second d) second undergraduate teaching laboratory

8) . ---, some of the Earth�s interior heat escapes to the surface.
a) A volcano erupts b) A volcano whether erupts c) A volcano erupts it d) If a volcano erupts

9) Sandra Day O�Connor, the first woman member of the United States Supreme Court, believed that the courts should interpret the laws --- legislate
a) than attempt to rather b) rather than attempt to c) to attempt rather than d) attempt rather than to


10) . --- of minerals, which are chemical elements or compounds of varying purity
a) The consistency of rocks b) Rocks, consisting c) Rocks consist d) Whereas rocks consist
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