金瓷冠不透明瓷的厚度为（） A.0.1mm B.0.2mm C.0.3mm D.0._爱下问搜题

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问题单项选择题 A1/A2型题

金瓷冠不透明瓷的厚度为（）

A.0.1mm

B.0.2mm

C.0.3mm

D.0.4mm

E.0.5mm

答案

参考答案：B

完形填空

完形填空。

     Lin Lin is a middle school student. She likes English  1 . She  2 hard. She reads English  3 morning. She
likes  4 English too. She often  5 the radio. She  6  TV on Saturdays and Sundays. Her parents like her.  7 all
the teachers like her, too. Lin Lin goes to school  8 Monday to Friday. On Saturdays, she  9  her homework.
On Sundays, she spends two hours  10 badminton with her friends.

( )1. A. at all
(     )2. A. study
(     )3. A. every
( )4. A. speak
(     )5. A. hears
(     )6. A. sees
( )7. A. And
( )8. A. at
( )9. A. does
( )10. A. plays

B. of all
B. studied
B. in
B. speaking
B. hear
B. watches
B. But
B. from
B. do
B. play

C. very much
C. studying
C. on
C. speaks
C. listen to
C. looks at
C. So
C. on
C. doing
C. playing

D. very many
D. studies
D. at
D. to speaks
D. listens to
D. looks
D. Or
D. in
D. to do
D. to play

单项选择题 A1/A2型题

关于肌肉的收缩形式不正确的是（）

A.等长收缩只有张力的变化而无长度的缩短

B.等长收缩时，肌肉作用的物体未发生位移，所以未对物体做功

C.等张收缩只有长度的变化而无张力的改变

D.等张收缩时，因有关节的运动，所以它对物体做了功

E.人体骨骼肌的收缩的形式不可能为混合式收缩