题目内容

Along the roads, there are beautiful flowers that delight travelers'.

A. eye
B. eyes
C. sight
D. seeing

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Living creatures are living in harmony the surroundings.

A. within
B. with
C. to
D. of

The mornings in the forest throb with the dawn chorus of scores of bird voices. Which of the following expessions has the same meaning with the underlined part?

A. are covered with
B. vibrate with
C. deal with
D. are connected with

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A. Met
B. Cys
C. Trp
D. Phe

白化病是由于先天性缺乏

A. 脯氨酸羟化酶
B. 苯丙氨酸羟化酶
C. 色氨酸羟化酶
D. 酪氨酸酶