下列有关进化的叙述中,正确的是() A.任何一个物种都不是单独进化的 B.有利变异的

题型:单项选择题

问题:

下列有关进化的叙述中,正确的是()

A.任何一个物种都不是单独进化的

B.有利变异的逐代积累是生物进化的实质

C.同一物种的两个不同种群间的地理隔离不会阻碍其基因交流

D.达尔文的自然选择学说奠定了进化论的基础,摒弃了拉马克用进废退和获得性遗传的观点

考点:高中生物生物的进化生物的进化题库
题型:单项选择题

Most people at some time or another have dreamed of being a popular kid at school. Being popular in middle school is much easier than it sounds. Just follow a few steps and finally see what it feels like to be a popular kid.

First, why do you want to be popular? Ask yourself if your desire(渴望) for being popular comes from looking down on yourself or an unlucky situation. If it does, then work first on your self-confidence.

Be friendly to everyone, even people that other people think are weird or different. If you are strange or different, realize that everyone is strange in their own way. Take part in school activities and make yourself more visible( 可见的) to the school population.

Find a talent or special skill that you have. Whether your skill is telling jokes, drawing, singing or playing soccer, show your skill in right way.

Volunteer to help with classroom or school activities that will help you leave a good impression (印象)on teachers. Develop a personal style that you feel goes well with your personality.

Be yourself and have fun. Keep your strong sense and personality. Join school clubs, sporting teams and student government to show yourself as someone who makes a difference at your school .

小题1:What does the underlined word “ weird ” in Paragraph 3 mean?

A.Strange.

B.Popular.

C.Exciting .

D.Common.小题2:What does the writer probably think is important to do according to the last paragraph?

A.Not losing a sense of self.

B.Creating a club of our own.

C.Making a difference to our school.

D.Following other students’ example.小题3:Which of the following is NOT mentioned by the writer?

A.Be nice to other people at school.

B.Find something that you are good at.

C.Make your teachers know you’re a good student.

D.Make friends with some students who are popular.小题4:The writer writes the passage to tell us________.

A.what to do in high school

B.how to get along well with others

C.how to become popular in middle school

D.what kinds of students are popular at school

题型:单项选择题

进站色灯信号机两个黄色灯光表示准许列车按限速要求越过该信号机,经道岔侧向位置进入站内通过。

题型:单项选择题

由张謇创办实业你感受到了什么?张謇大生纱厂的结局说明了什么?

____________________________________________________________________

题型:单项选择题

标准预防-“飞沫传播”防护措施是什么?

题型:单项选择题

生殖细胞瘤最常见的部位是()

A.鞍上区

B.鞍旁区

C.桥小脑角区

D.松果体区

E.脑室内

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