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【多选题】
腐殖质是带负电的高分子弱电解质，根据在水中的溶解度不同分为____、____、____。A.
富里酸
B.
生物炭
C.
酸
D.
腐黑物
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【简答题】A．It is compared with an operating light. B．It is compared with a . C．It is compared with a brain drain machine. D．It is compared with a stimulation drug.
【单选题】br ea d A. t ea B. m ea t C. w ea ther D. b ea ch
A.
t ea
B.
m ea t
C.
w ea ther
D.
b ea ch
【单选题】----Which of these resorts do you like best? ----______. They are both hot and crowded.
A.
Either
B.
Nothing
C.
Neither
D.
None
【单选题】- ____________ - Not really. Winter is too cold and summer is too hot.
A.
Do you like the weather here?
B.
Do you get much rain in summer?
C.
How is the weather today?
D.
How cold is it?
【单选题】— _____ do you like Sichuan food? — Because it's hot. I like hot food very much. [ ]
A.
Why
B.
How
C.
Where
D.
Who
【简答题】A. b ea t B. ea ch C. r ea lly D. w ea k
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