如图所示，实线表示两个相干波源S1、S2发出波的波峰位置，下列说法中不正确的是（

网络交往丰富了我们的生活，对网络交往认识正确的是 (   )

A．网络交往利大于弊，我们可以无节制地上网

B．网络具有虚拟性，我们不必为自己的“网络言行”负责

C．只有在网络交往中才能发挥自己的特长

D．在网络交往中要提高自己的安全防范意识

阅读下面的短文，在标有序号的空白处填入一个适当的词，或填入括号中单词的正确形式，并将序号及相应答案写在答题纸上。

In all one’s lifetime it is oneself that one spends the most time being with or dealing with. But it is precisely(精确地) oneself that one has the  ①  understanding of. When you are going upwards in life you tend to overestimate(高估) yourself. It seems that everything you seek for is within your reach. When you are going downhill you tend to underestimate yourself,  ② (mistake) difficulties for your own inability.

To get a thorough understanding of oneself is to gain a correct view of oneself and be a realist --- aware of   ③  one’s strength and shortage. You may look ④  hopefully to the future but be sure not to expect too much, for details can never be fully realized. You may be courageous to meet challenges but it should be clear to you where to direct your efforts.

To get a thorough understanding of oneself requires doing oneself a favor when it    ⑤ (need). In time of anger, do yourself a favor by giving vent(出路，出口) to it in a quiet place so that you won’t be hurt by its flames; in time of  ⑥  , do yourself a favor by sharing it with your friends so as to  ⑦  a sad mood into a cheerful one; in time of tiredness, do yourself a favor by getting a  ⑧  sleep. Care about your health and daily life.   ⑨  you know perfectly well when and how to do yourself a favor, you won’t be confident and ready enough to resist the attack of illness.

To get a thorough understanding of oneself is to get a full control of one’s life. Then one will find one’s life full of   ⑩  .

某市农村地区欲开展5岁以下儿童“预防肠道感染性疾病健康教育干预”项目，健康教育工作者在项目计划书中提出以下一些项目干预目标，其中属于总体目标的是

A．一年内儿童照料者备餐前洗手率提高25%
B．一年内使目标社区五岁以下儿童感染性腹泻发生率降低
C．半年内儿童照料者关于肠道感染性疾病对儿童健康威胁严重性的认识正确率提高30%
D．半年内儿童照料者关于儿童肠道感染性疾病易感性的认识正确率提高30%
E．以上都不是

下列句子中加点的词或词组，在古代汉语和现代汉语中词性、意义和用法有什么不同？

不可，直不百步耳。（《孟子？梁惠王上》）

救援伤兵国际委员会由（）联合成立。

A、1人

B、2人

C、5人

D、6人