结核菌素试验结果硬结直径在10mm以内，为下列哪些情况（）。 A.营养不良 B.HI

We know that the workers ____ all night but there is no other way. [ ]

A. make to work

B. are made to working

C. are made work

D. are made to work

口腔科放射线检查时，所用的薛氏位X线片是用于（）

A.观察牙列情况

B.观察牙齿根尖情况

C.观察头颅正面情况

D.观察TMJ情况

E.观察头颅侧面情况

—      does Grace do her English exercises every day?

—About thirty minutes.

A．How many

B．How much

C．How long

D．How far

保温瓶胆