创新是一个民族进步的灵魂，是一个国家兴旺发达的不竭动力。坚持自主创新，体现的唯物辩证

某患者有过不洁性交史、1个月后因外生殖器出现丘疹状硬结就诊，检查发现其硬结呈圆形，基底清晰，边缘隆起，质硬，有无痛性溃疡。初步怀疑为梅毒螺旋体感染。

如果是梅毒螺旋体感染，则该患者的临床症状应是()

A．一期梅毒

B．二期梅毒

C．潜伏性梅毒

D．心血管梅毒

E．神经梅毒

根据下面短文内容，在短文的空格处填上一个恰当的词，使短文完整、通顺。

Whenever we see something new, we wish to write it down in one form or another. We will be happier if we share (分享) our experience with others. Then  1  can we write better travel stories? The following may be helpful.

Memory and notes

Don't believe your memory. You may have a good memory,   2  you cannot remember everything. You are seeing and hearing so much information while you're on a trip. When you return to write about your travel stories, you may forget something. So you should make notes, take photographs, and if   3  , take videos. In this way, you can describe your travel and write it down   4  missing anything.

Photographs and your stories

Photographs are very useful for you to remember what you have seen. As you see the photographs, you can describe your experiences easily by remembering how you felt when you took   5 .

When you are writing about your travel stories, make sure they are not too short as your reader may not get the full impression (印象) of them and make sure they are not so  6 that the reader may get bored.

Popular factors (因素)

Make sure your stories have popular factors and the reader will find your travel stories not only pleasant to   7 , but useful as well. Popular factors are food to eat, places to stay and the things to look out for while   8  . They should also include what you've found useful and the things you miss so much.

新生儿坏死性小肠结肠炎的发病哪项不正确()

A．足月儿发病多

B．低体重儿发病多

C．早产儿发病多

D．窒息新生儿发病多

E．高渗乳汁喂养儿发病多

缩合聚合

在计算机网络中，实现数字信号和模拟信号之间转换的设备是 【6】 。