多发于儿童期、界限明显且偶有恶变的皮肤改变多考虑（） A.交界痣 B.皮内痣

某同学设计了一个探究电容器所带电荷量与电容器两极间电压关系的实验，实验电路如图6甲所示，其中P为电流传感器，V为电阻很大的电压表。实验时，先将开关S₁闭合，单刀双掷开关S₂掷向a，调节滑动变阻器的滑动头到某位置使电容器C充电，当电路达到稳定后记录理想电压表的示数。再迅速将开关S₂掷向b，使电容器放电。电流传感器P将电容器充、放电过程中的电流数据传送给计算机，在计算机上可显示出电流i随时间t变化的图象如图乙所示。然后改变滑动变阻器滑动头的位置，重复上述步骤，记录多组电流随时间变化的图象和电压表的示数。对于这个实验过程和由图象及数据所得出的结果，下列说法中正确的是（   ）

A．流过电流传感器P的充电电流和放电电流方向相同

B．图乙中的第①段（充电阶段）电流曲线与横轴所围图形的面积表示电容器充电结束时所带的电荷量

C．电容器充电结束时所带电荷量随电容器充电结束时两极间电压变化的关系图象应为一条过原点的倾斜直线

D．电容器充电结束时所带电荷量与滑动变阻器滑动头的位置无关

荆芥生用的功效是（）

A.祛风解表

B.缓和辛散之性，增强止血作用

C.缓和寒滑之性，增强止血作用

D.产生止血作用

E.散头部之表邪

男性，37岁。呼吸困难，查体见脉搏在吸气时消失，这种脉搏是（）

A.交替脉

B.无脉

C.迟脉

D.奇脉

E.水冲脉

2003年10月20日，甲乙签订耕牛买卖合同，10月22日，甲向乙交付耕牛5头，双方约定在甲公司办理完企业达标验收检查之后，再付款。付款后，牛的所有权即转移给乙。11月15日，乙付款。在此期间，乙将5头牛交丙使用，共获租金2千元，甲得知此事要求乙将2千元交给甲，乙拒绝，双主遂发生诉讼。下列表达正确的是_________。

A．该笔租金2千元应归甲所有

B．该笔租金2千元应由甲、乙平分

C．设甲在11月30日才向乙交付5头牛，从11月15日至30日，甲将这5头牛租给丁，获租金1200元，该租金应归甲所有

D．在上述C项条件下，该租金(1200元)应归乙所有

There (1) not one type of reading but several according to your reasons for reading. To read carefully, you have to (2) your reading speed and technique (3) your aim (4) reading. Skimming is a technique necessary for quick and efficient reading.

When skimming, you (5) the reading (6) quickly in order to get the (7) of it, to know how it is organized, (8) an idea of the tone or the intention of the writer. Skimming is (9) an activity which (10) an overall view of the text and (11) a definite reading competence.

Skimming doesn’t need reading all the material, but it doesn’t mean that it is an (12) skill for the lazy, because it need a high degree of alertness and concentration.

When you read, you usually start with (13) understanding and move towards detailed understanding rather than working the other way round. But (14) is also used after you have already carefully studied and you need to (15) the major ideas and concepts.

In order to be able to skim quickly and (16) through a text, you should know where to look for what you want. In preview skimming you read the introductory information, the headings and subheadings, and the summary, if one is provided. (17) this skimming, decide whether to read the material more thoroughly, and select the appropriate speed (18) you read.

The same procedure (19) for preview skimming could also be used to get an overview. Another method would be to read only key words. This is done by omitting the unnecessary words, phrases, and sentences.

In order to skim efficiently and fulfill your purpose, (20) practice is necessary.

2().

A.adapt

B.adopt

C.change

D.adept