以下对滚法的叙述，不正确的是（）。A、滚法属于摆动运动类手法。 B、对滚法操作的频率

阅读下面短文，从短文后各题所给的四个选项（A、B、C 和 D）中，选出可以填入空白处的最佳选项，并在答题卡上将该项涂黑。

                                    A Heroic Driver

Larry works with Transport Drivers. Inc. One morning in 2009. Larry was  41

along 165 north after delivering to one of his    42   . suddenly, he saw a car with its bright lights on.    43    he got closer, he found 44    vehicle upside down on the road. One more look and he noticed    45    shooting out from under the    46    vehicle. Larry pulled over, set the brake and    47   the fire extinguisher (灭火器). Two good bursts from the extinguisher and the fire was put out.

The man who had his bright lights on    48    and told Larry he had    49    an emergency call. They    50    heard a woman’s voice coming from the wrecked (毁坏的) vehicle.    51   the vehicle, they saw that a woman was trying to get out of the broken window. They told her to stay    52    until the emergency personnel arrived,    53    she thought the car was going to    54   . Larry told her that he had already put out the fire and she should not move    55    she injured her neck.

Once fire and emergency people arrive, Larry and the other man    56    and let them go to work. Then, Larry asked the    57    if he was needed or    58    to go. They let him and the other man go.

One thing is    59   —Larry went above and beyond the call of duty by getting so close to the burning vehicle! His    60    most likely saved the woman’s life.

59（）

A.for certain

B.for consideration

C.reported

D.checked

电位滴定采用E—V曲线法确定终点时，滴定终点是（）。

A.曲线的斜率最大点

B.曲线的斜率最小点

C.尖峰状曲线的尖峰点

D.曲线的转折点

糖可能产生爆炸的粉尘最小浓度是( )g/m³。

A．30～50
B．7
C．10.3
D．0.9

材料一近年来，我国经济发展过程中“产能过剩”问题突出，引起社会广泛关注。如今国际经济形势依然错综复杂、充满变数。2013年我国要以提高经济增长质量和效益为中心，促进经济持续健康发展。材料二2012年中央经济工作会议指出，要充分利用国际金融危机形成的倒逼机制，把化解产能过剩矛盾作为工作重点，总的原则是尊重规律、分业施策、多管齐下、标本兼治，实现尊重经济规律、有质量、有效益、可持续的发展。运用辩证唯物论知识，说明材料中中央决策的正确性。

迁延性腹泻的病程为

A．2周内
B．2周～2个月
C．2个月以上
D．3个月以上
E．6个月以上