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【单选题】
酶的最主要来源是哪一种( )?A.
微生物
B.
动物产生
C.
植物产生
D.
化学产生
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反馈参考答案：
举一反三
【单选题】They couldn ’ t see a ______ of hope that they would be saved by a passing ship.
A.
grain
B.
span
C.
slice
D.
gleam
【简答题】I work as a dentist ’ s assistant and people often say very funny things when they come to see the dentist. Here are some of them. Roland had an 11 o ’ clock appointment. He phoned at 12 o ’ clock and...
【单选题】They were so far away that I couldn ́t _____ their faces clearly.
A.
see through
B.
make up
C.
see off
D.
make out
【简答题】花中四君子是指 、 、 、 。
【单选题】_____ these pictures, he couldn ’ t help thinking of those memorable days they spent together.
A.
Seeing
B.
He saw
C.
With seeing
D.
To see
【简答题】Rose didn ’ t see her school IC card at lunch time. She asked her classmates and looked for it everywhere. But she couldn ’ t 1 it. Later, one girl said that she saw Kate take a card from Rose ’ s des...
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