铸造支架完成后，在模型试戴中出现就位困难的原因有哪些?

阅读理解。

     Jim is a basketball fan. He is very good at (擅长) playing basketball.  Michael Jordan (乔丹) is his

  favorite basketball player. Michael Jordan is an American (美国人). Jim is in the school basketball club.

  Every Friday afternoon they play basketball after class. Jim's friend Amy isn't good at basketball, but she

  is very good at football. Ronaldo (罗纳尔多) is her favorite football player.Ronaldo is a Brazilian (巴西

 人). Amy plays football with her classmates every Saturday afternoon at school.

1. Jim is good at _____.

    A. volleyball    

    B. football    

    C. basketball    

    D. badminton

2. Amy plays _____  well.

    A. football    

    B. badminton    

    C. tennis    

    D. basketball

3. Michael Jordan is _____ .

    A. an American    

    B. an Englishman (英国人)

    C. Chinese    

    D. a Brazilian

4. Ronaldo comes from _____ .

    A. England (英国)  

    B. Brazil (巴西)    

    C. China    

    D. America

5. Jim plays basketball on____  ,but Amy plays football on______.

    A. Sarurday; Friday    

    B. Sunday; Sunday

    C. Friday; Saturday    

    D. Friday; Friday

下列不符合巨幼细胞贫血的化验是（）。

A.MCV＞100fl

B.可呈现全血细胞减少

C.有核红细胞的胞浆发育明显落后于胞核

D.中性粒细胞可有6叶或以上的核

E.巨核细胞可减少

高速公路限速标志标明的最高时速不得超过( )km。

A．140

B．120

C．100

D．80

As agreed upon in our negotiations, payment ( ) L/C.

A. by
B. will be
C. is to be made by
D. is by

经人举报税务机关认定A公司有偷税行为并划拨了该公司银行帐户上120000元资金作为纳税保证金，经过一个月检查确认A公司无偷税行为，A公司提出如下要求，税务机关应认可的是（）。

A、退还划拨的120000元资金

B、赔偿120000元资金一个月利息

C、因流动资金减少造成的损失50000元

D、公司名誉损失费10000元