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【单选题】
What's the difference between professional training and college education?A.
the former can only provide students with professional skills while the latter enables students to become civilized humans.
B.
the former enables students to become civilized humans while the latter can only provide students with professional skills.
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举一反三
【单选题】请在第____处填上正确答案。
A.
There have been many attempts to redesign the periodic table since Dmitri Mendeleev drew it up in 1871．
B.
Railsback has still ordered the elements according to the number of protons they have．
C.
“I imagine this would be good for undergraduates．”
D.
Railsback has listed some elements more than once．
E.
And the size of element’s symbol reflects how much of it is found in the Earth’s crust．
F.
The traditional periodic table was well drawn．
【单选题】---How was your driving test going? ---Not very well at first, but after many attempts I ____ passed it.
A.
merely
B.
occasionally
C.
absolutely
D.
eventually
【简答题】新设计井钻遇目的层顶界面的深度在1500m,目的层厚20m,该井的设计深度应大于 m。
【单选题】Many attempts ______ to climb that mountain before he succeeded in doing it.
A.
have made
B.
had been made
C.
had made
D.
have been made
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