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【单选题】
Questions 26 to 30 are based on the following passage. Exercise is one of the few factors with a positive role in long-term maintenance of body weight. Unfortunately, that message has not gotten through to the average American, who would rather try switching to “light” beer and low-calorie bread than increase physical exertion. The Centers for Disease Control, for example, found that fewer than one-fourth of overweight adults who were trying to shed pounds said they were combining exercise with their diet. In rejecting exercise, some people may be discouraged too much by caloric-expenditure charts: for example, one would have to briskly walk three miles just to work off the 275 calories in one delicious Danish pastry (饼). Even exercise professionals concede half a point here. “Exercise by itself is a very tough way to lose weight,” says York Onnen, program director of the President’s Council on Physical Fitness and Sports. Still, exercise’s supporting role in weight reduction is vital. A study at the Boston University Medical Center of overweight police officers and other public employees confirmed that those who dieted without exercise regained almost all their old weight, while those who worked exercise into their daily routine maintained their new weight. If you have been sedentary (极少活动的) and decide to start walking one mile a day, the added exercise could burn an extra 100 calories daily. In a year’s time, assuming no increase in food intake, you could lose ten pounds. By increasing the distance of your walks gradually and making other dietary adjustments, you may lose even more weight.
A.
Controlling one’s calorie intake is more important than doing exercise.
B.
Even occasional exercise can help reduce weight.
C.
Weight reduction is impossible without exercise.
D.
One could lose ten pounds in a year’s time if there’s no increase in food intake.
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举一反三
【单选题】粗车时为了提高生产效率,选用切削用量时应首选( )
A.
切削速度
B.
背吃刀量
C.
进给量
D.
机床转速
【单选题】粗车时为了提高生产率,选用切削用量时,应首先取较大的( )
A.
背吃刀量
B.
进给量
C.
切削速度
D.
切削力
【判断题】判断题:“寿如金石佳且好兮”是以青铜器上的文字入印。
A.
正确
B.
错误
【单选题】选出句中谓语的中心词 The days get longer and longer when summer comes.
A.
get
B.
longer
C.
days
D.
summer
【单选题】热塑性弹性体结合了橡胶和塑料的优点,下列共聚物中是热塑性弹性体的为( ).
A.
苯乙烯—丁二烯—苯乙烯嵌段共聚物
B.
苯乙烯—丁二烯无规共聚物
C.
异丁烯—异戊二烯共聚物
D.
乙烯—丙烯—乙烯嵌段共聚物
【单选题】选出句中谓语的中心词 2. The days get longer and longer when summer comes.
A.
get
B.
longer
C.
days
D.
summer
【简答题】对汽车运用有主要影响的道路条件,对于汽车运行速度、行驶平顺性及装载质量利用程度其决定性作用。是 。
【单选题】粗车时为了提高生产率,选用切削用量时,应首先取较大的( )
A.
背吃刀量
B.
进给量
C.
切削速度
【单选题】找出谓语的中心动词 The days get longer and longer .
A.
get
B.
longer
【单选题】粗车时为了提高生产率,选用切削用量时,首先取较大的()
A.
背吃刀量
B.
进给量 切削速度
C.
切削速度
D.
主轴转速
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