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Could I speakMr Thompson now?

A. /
B. on
C. to
D. in

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I am interested your latest products.

A. at
B. for
C. in
D. to

I’m glad to have the opportunitythe meeting.

A. attends
B. to attend
C. attending
D. attend

Please inform the managersthe meeting.

A. for
B. in
C. to
D. of

参与肝脏初级结合胆汁酸生成的氨基酸是_______

A. 组氨酸
B. 丙氨酸
C. 甲硫氨酸
D. 亮氨酸
E. 甘氨酸