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【单选题】
仙人掌的刺状物是A.
地下茎的变态
B.
地上茎的变态
C.
托叶的变态
D.
叶的变态
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举一反三
【单选题】— We heard that some students got injured in this school bus accident in our province. — Yes, _____news came as _____shock to all of us. [ ]
A.
/; /
B.
/; a
C.
the; /
D.
the; a
【单选题】Who is the audience?
A.
Professors.
B.
The employees of the university.
C.
New students.
D.
The new teachers of the university.
【简答题】Part 2 Read the passage and match the paragraphs with the subtitles below.
【单选题】Students ___________ remain in their seats until all the papers have been collected.
A.
may
B.
shall
C.
need
D.
can
【单选题】______ the heat to a simmer and continue to cook for another 8～0 minutes or until most of the water has evaporated.
A.
Turn off
B.
Turn over
C.
Turn down
D.
Turn up
【简答题】Match the paragraphs with their main ideas.
【简答题】（14分）碳和氮的许多化合物在工农业生产和生活中有重要的作用。 （1）用CO 2 和H 2 合成CH 3 OH具有重要意义，既可以解决环境问题，还可解决能源危机。已知： + = + 2 △H = －725.5 kJ·mol －1 2H 2 (g)+O 2 (g) = 2H 2 O(l) △H = －565.6 kJ·mol －1 ， 请写出工业上用CO 2 和H 2 合成CH 3 OH(l)的热化...
【简答题】Match the paragraphs with the statements best sumarize their general ideas.
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