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【单选题】
水稻生长发育的第8期是（ ）。A.
乳熟期
B.
蜡熟期
C.
完熟期
D.
扬花期
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【单选题】Passage 2 Questions 6 to 10 are based on the following passage: The vitamins necessary for a healthy body are normally supplied by a good mixed diet, including a variety of fruits and green vegetables...
A.
normally contains enough vitamins
B.
still needs special provision of vitamins
C.
is suitable for losing weight
D.
is composed of fruits and vegetables
【单选题】Passage 2 Questions 6 to 10 are based on the following passage: The vitamins necessary for a healthy body are normally supplied by a good mixed diet (饮食) , including a variety of fruits and green vege...
A.
normally contains enough vitamins
B.
still needs special provision of vitamins
C.
is suitable for losing weight
D.
is composed of fruits and vegetables
【单选题】Earthworms occur ______ adequate moisture and food and the necessary soil conditions are found.
A.
but
B.
where
C.
however
D.
And
【单选题】Earthworms occur ______ adequate moisture and food and the necessary soil conditions are found.
A.
and
B.
whenever
C.
however
D.
wherever
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