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【单选题】
一级不可逆反应 A → R, 当反应温度一定,反应物 A 的初始浓度 C A0 为 2mol/L ,转化率达 80 %时,所需的反应时间为 2h 。如果 C A0 提高到 10mol/L ,其它条件不变,则所需反应时间( )。A.
10h
B.
0.4h
C.
2h
D.
0.2h
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A.
part
B.
along
C.
place
D.
position
【单选题】-----How do you find your visit to the museum ? -----I thoroughly enjoyed it, it was ______ than I expected.
A.
far more interesting
B.
even more interesting
C.
so more interesting
D.
a lot much interesting
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【单选题】How do Okinawanse exercise? Choose one that is not mentioned in the passage.
A.
gardening
B.
walking
C.
jogging
D.
relaxing activities
【单选题】— _____do you like the film tonight? —Better than________ .
A.
How; expected
B.
What; expected
C.
How; to expect
D.
What; to expected
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