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【单选题】
听力原文：W: How did you do on the maths exam, John? M: I barely made it. It was just a passing score but better than I had expected. Q: What do we learn from the conversation? (14)A.
John didn't pass, although he had tried his best.
B.
John did better than he thought he was able to.
C.
John got an excellent score, which was unexpected.
D.
John was disappointed at his math score.
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【单选题】热电偶的校验装置内的冷端恒温经常是0°C,根据实际经验,保证是0°C的方法是采用的下面方式的哪种( C )。
A.
干冰冷却
B.
碘化银冷却
C.
冰水混合物
D.
氮气冷却
【简答题】这家小店供应的饮料有茶、可乐、雪碧、矿泉水,等等。 (and so on)
【多选题】由于( )，政府和社会组织之间缺乏明确的界限，经常出现“政社不分”“政事不分”的 现象。
A.
法律体系不全
B.
公益性不足
C.
专业人员缺乏
D.
组织运行欠规范
E.
筹资渠道狭窄
【单选题】这家小店供应的饮料有茶、可乐、雪碧、矿泉水,等等。 (and so on)
A.
The grocery provide such drinks as tea, Coke, Sprite, mineral water, and so on.
B.
The grocery provides such drinks as tea, Coke, Sprite, mineral water, and so on.
C.
The grocery provides such drink as tea, Coke, Sprite, mineral water, and so on.
D.
The grocery provides many drinks as tea, Coke, Sprite, mineral water, and so on.
【简答题】为定性探究乙醇的分子结构，某化学课外小组设计了如下实验方案：在盛有少量无水乙醇的试管中，加入一粒擦干煤油的金属钠，在试管口迅速塞上配有医用注射针头的单孔塞，点燃放出的气体，并把一干燥的小烧杯罩在火焰上（如图），在烧杯壁上出现液滴后，迅速倒转烧杯，向烧杯中加入少量的澄清石灰水，观察有无混浊。 （1）以上实验设计存在重大安全隐患，请你帮他们指出来______________________。 （2）确...
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