碱性尿液中不见（）。 A.磷酸盐结晶 B.尿酸结晶 C.无定型磷酸铵结晶 D.磷酸铵

 —Excuse me，Miss Smith.  Could you tell me how to improve my spoken English?

—OK. The best way is to practice  *

A．as soon as possible

B．as quickly as possible

C．as much as possible

D．as clear as possible

If you want to borrow a football after school, your student ____ here.

A．has to leave

B．mustleave

C．has to be left

D．mustbe left

城镇燃气可分为天然气、人工煤气、（）和（）。

安置补助费，按照需要安置的农业人口数计算。( )

甲亢的临床表现有（）

A、怕热多汗

B、烦躁易怒

C、月经量多

D、多食易饥