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【单选题】
下列哪种火成岩侵入体在自然界是不可能存在的？（ ）A.
花岗岩基
B.
流纹岩岩盆
C.
辉绿岩床
D.
辉长岩岩株
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反馈参考答案：
举一反三
【简答题】If you were a pilot flying a plane, and suddenly the engine failed, would you eject (弹出), or stay in? For a pilot, the choice is very difficult. If he ejects, he is wise, but the plane crashes. If he ...
【单选题】--He llo! Could I speak to Mr Smith? --__________. Please call back later.
A.
Wait a minute
B.
Hold on for a mome n t
C.
Speaking
D.
Sorry; he isn't in
【单选题】--- Can you show me Mr. Jaffer’s office, please? --- _____. But I don’t know if he is in at the moment.
A.
Thanks
B.
Go on
C.
Sure
D.
You are welcome
【简答题】保辜制度
【单选题】一定量的理想气体，在温度不变的条件下，当容积增大时，分子的平均碰撞次数和平均自由程的变化情况是（）。
A.
减小而不变
B.
减小而增大
C.
增大而减小
D.
不变而增大
【单选题】--- Have you seen the robber______? --- Why ask me? You are the only one who stands _____ to him.
A.
clear; close
B.
clearly; closely
C.
clear; closely
D.
clearly; close
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