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二、语法填空( 2 , 20 分) Are you facing a situation that looking impossible to fix? In 1969, the pollution is terrible along the Cuyahoga River near Cleveland, Ohio. It 1(be)unimaginable that it could be ever be cleaned up. The rive was so polluted that it ______2(actual) caught fire and burned. Now year late, this rive is one of_______3most outstanding examples of environmental cleanup. But river wasn’t changed in a few days_____4even a few months. It took years of work _______5(reduce) industrial pollution and clean the water. Finally, that hard work paid off and now the water in the river is______6(clean) than ever. Maybe you are facing an impossible situation. Maybe you have a habit _____7 is driving your family crazy. Possibly you drink too much or don’t know how to control your credit card use. When you face such impossible situation, don’t you want a quick fix and something to change immediately. While there are_______8(amaze) stories of instant transformation, for most of us the _______9(change) are gradual and require a lot of effort and work, like cleaning up a polluted river. Just be_______10(patience)
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【多选题】斜齿圆柱齿轮的重合度将随着()的增大而增大。
A.
螺旋角
B.
齿宽
C.
大端模数
D.
大端压力角
【单选题】下列说法正确的是(  )
A.
锐角的余角一定是钝角
B.
一个角的补角一定大于这个角
C.
锐角和钝角互补
D.
锐角的补角一定是钝角
【单选题】斜齿圆柱齿轮重合度随螺旋角的增大而( )。
A.
增大
B.
减小
C.
不变
D.
不确定
【单选题】关于妊娠滋养细胞疾病,下列哪项是不恰当的()
A.
胎盘部位滋养细胞肿瘤是起源于胎盘种植部的滋养细胞肿瘤,多为良性临床经过
B.
侵蚀性葡萄胎一般恶性程度不高,大多仅造成局部侵犯,预后较好
C.
绒毛膜癌可继发于流产、足月产后和异位妊娠
D.
绒毛膜癌可发生肺、阴道、肝和脑等部位转移,肺转移是主要死亡原因
E.
滋养细胞肿瘤肺转移造成急性肺栓塞,出现肺动脉高压和急性肺功能衰竭
【判断题】为客人上茶时,一般应从客人的左后侧双手将茶杯递上,置于客人左前方。(  )
A.
正确
B.
错误
【单选题】下面说法错误的是(  )
A.
如果一个角的补角是锐角,那么这个角就没有余角
B.
锐角的余角还是锐角
C.
钝角一定大于它的补角
D.
互补的两个角中,一个是锐角一个是补角
【单选题】下列说法中正确的是 [     ]
A.
一个锐角加上一个锐角还是锐角
B.
一个角不是钝角必是锐角
C.
钝角与锐角的差一定大于锐角
D.
钝角与直角的差一定小于直角
【单选题】下列说法正确的是(  )
A.
一个角的余角一定小于这个角
B.
一个锐角的余角一定是锐角
C.
一个角的补角一定是钝角
D.
一个角的补角一定大于这个角
【判断题】为客人上茶时,一般应该从客人的左后侧双手将茶杯递上去,置于客人左前方。( )
A.
正确
B.
错误
【单选题】在一个以肌肉为效应器的反射弧中,如传出神经受到损伤,而其它部分正常,当感受器受到刺激时将表现为(  )
A.
失去感觉,但能运动
B.
失去感觉,同时肌肉无收缩反应
C.
有感觉且能运动
D.
有感觉,但肌肉无收缩反应
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