在失眠症患者中，以下哪种症状最多见（)A.入睡困难B.睡眠浅表C.早醒D.睡眠感觉缺乏

No ones face is perfectly______. For example, one eyebrow is often slightly higher than the other.

A．balanced

B．symmetric

C．similar

D．subtle

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接触粉尘1～2年发生的硅沉着病，属何种硅沉着病

A.硅沉着病

B.晚发性硅沉着病

C.硅酸盐肺

D.肺尘埃沉着病

E.速发性硅沉着病

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Tom was very lucky______with his life: he almost did not get out of the room.

A．escaping

B．to escape

C．to have escaped

D．to be escaping

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Betty is the only one of the students who______to represent the group.

A．have been chosen

B．has been chosen

C．have chosen

D．has chosen

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