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问题 单项选择题

根据《建设工程施工合同(示范文本)》规定，发包方收到承包方递交的竣工结算报告及结算资料后，应在( )天内给予确认或提出修改意见。

A．7

B．14

C．28

D．56

答案

参考答案：C

完形填空

阅读下面短文，按照句子结构的语法性和上下文连贯的要求，在空格处填入一个适当的词或使用括号中词语的正确形式填空，并将答案填写相应位置上。

The most influential book in my life

The Story of My Life by Helen Keller is the most influential book in my life. It __1__ (fill) with courage, struggle and faith throughout. Helen Keller was once in deep despair in her __2__ (child), but finally she decided to overcome her physical defects and live happily. Furthermore, she showed great patience, ___3___ (do) well in her long and hard learning period.

I have learned, above all, three lessons from her story. First, she taught me that often the road to success is to face hardships ___4____ (brave). Maybe you are born under an ill star yet you can stand a better chance ___5___ others. It is therefore important that you screw up your courage ____6____courage is needed. Second, the impairment of part of her senses did not prevent ___7___ from learning. On the contrary, she ___8___ (make) continual efforts to go deeper into the realm of knowledge her fortitude had thus helped her overcome many handicaps. ___9___, she advised that we should make the most of our sense-organs as if we ___10___ (lose) them soon because this way we would observe the world more carefully than ever before.
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多项选择题

如图所示，水平地面上有一质量m=20kg的箱子，一个小朋友用F="30"N的水平推力推箱子，箱子仍然保持静止．关于箱子受到地面的静摩擦力，下列说法中正确的是（）

A.静摩擦力的大小为50N

B.静摩擦力的大小为30N

C.静摩擦力的方向与推力F的方向相反

D.静摩擦力的方向与推力F的方向相同
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