正确答案: B

甘油

题目：下列哪个为软膏剂的基质，又为皮肤滋润剂（ ）。

解析：B

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举一反三的答案和解析：

[单选题]请阅读下列短文，从每题所给的四个选项（A、B、C和D）中，选出最佳选项，并在答题卡上将该选项的标号涂黑。A

Untidy.

[单选题]DScience can't explain the power of pets, but many studies have shown that the company of pets can help lower blood pressure (血压) and raise chances of recovering from a heart attack, reduce loneliness and spread all-round good cheer. Any owner will tall you how much joy a pet brings. For some, an animal provides more comfort than a husband/wife. A 2002 study by Karen Allen of the State University of New York measured stress (紧张) levels and blood pressure in people - half of them pet owners –while they performed 5 minutes of mental arithmetic (算术) or held a hand in ice water. Subjects completed the tasks alone, with a husband/wife, a close friend or with a pet. People with pets did it best. Those tested with their ani mal friends had smaller change in blood pressure and returned most quickly to baseline heart rates. With pets in the room, people also made fewer math mistakes than when doing in front of other companions. It seems people feel more relaxed (放松)around pets, says Allen, who thinks it may be because pets don't judge. A study reported last fall suggests that having a pet dog not only raises your spirits but may also have an effect on your eating habits. Researchers at Northwestern Memorial Hospital spent a year studying 36 fat people and their equally fat dogs on diet-and-exercise programs; a separate group of 56 people without pets were put on a diet program. On average, people lost about I1 pounds, or 5% of their body weight. Their dogs did even better, losing an average of 12 pounds, more than 15% of their body weight. Dog owners didn't lose any more weight than those without dogs but, say researchers, got more exercise overall-mostly with their dogs - and found it worth doing.

What pets bring to their owners.

[单选题]昆曲本是吴方言区域里的产物，现今还有人在那里传习。苏州地方，曲社有好几个。退休的官僚，现任的善堂董事，学校教员，中年田主少年田主，还有诸如此类的一些业余的唱曲家，都是那几个曲社里的成员。至于职业的演唱家，只有一个班子，就是上海“大千世界”的仙霓社。逢到星期日，没有什么事情来逼迫，我也偶尔跑去看他们的演唱，消磨一个下午。演唱昆曲是厅堂里的事情。地上铺了一方红地毯，就算是剧中的境界；唱的时候，笛子是主要的乐器，声音当然不会怎么响，但是在一个厅堂里，也就各处听得见了。搬上旧式的戏台去，即使在一个并不宽广的戏院子里，就不及平剧①那样容易叫全体观众听清。如果搬上新式的舞台去，那简直没有法子听，大概坐在第五六排的人就只看见演员拂袖按鬓了。

昆曲里好的戏文词藻故实颇丰，而且文言白话兼而有之。

[单选题]葫芦科的果特称( )。

瓠果

[单选题]禾本科植物例如水稻、小麦、玉米等的小穗，实际上代表一朵小花，其中的颖片、桴片、浆片等均是由花被饰变而来的。( )

错误

[单选题]50_______

hopes

解析：根据作者 的描述可知， 作者本来是想要表现一下的，结果却出现了失误，所以自己的希望落空了，因此本句句意应为“当幕布落下，我的希望也落空了。”故B项符合语境。