葡萄糖在细胞中通过有氧呼吸生成的终产物有（） A.丙酮酸 B.H2O C.酒精 D.

This book tells _______ life story of John Smith, who left _______ school and worked for a newspaper at the age of 16.

A．the; the

B．a; the

C．the; /

D．a; /

凡申请出境居住（）的中国籍人员，必须持有卫生检疫机关签发的健康证明。

A．1年以上

B．2年以上

C．3年以上

D．半年以上

. Some inventions are well received, but _____ function, they aren't very successful.

A. according to         B. in terms of        C regardless of        D. owing to

土比重试验中浮称法，试样浸水时间（）昼夜。

A.0.5

B.1

C.1.5

D.2