以下哪项不是常用的输液 A．葡萄糖氯化钠注射液 B．等渗氯化钠注射液 C．复方氯化钠

My problems started after I went to a boarding（寄宿） school.I was only 14，and at first I missed my family a lot.I often called them and cried on the phone.But after two weeks，I found I enjoyed being with my classmates at school. I had many friends who were boys.I thought of them as my best friends-but only friends.I never guessed my friendships with boys would become a problem.

Then，three months later，my friends told me that some teachers and girls said I was hanging out with boys all day long in order to get attention from them.Seven months after that，the head teacher Mr.Wang asked the class to choose some students to join the Student Union（学生会）.I thought I could win for I was doing well in school.I’d already won prizes for the best math and English exams.A week later，the list came out and it didn’t include me.I was sad.

Mr.Wang came to me and said，“Don’t be sad.I know you’re excellent! Maybe you are a little distant（疏远的）from the girls in our class.They don’t know much about you，so some of them didn’t choose you.It doesn’t matter.Do your best to get along well with everyone and I think you’ll make it next time.”

小题1:What was the writer’s problem when she first entered the boarding school?

A．She didn’t like her new school.

B．She didn’t get along well with her classmates.

C．She missed her family very much.

D．She didn’t like her new teacher.小题2:Why did the writer fail to join the Student Union?

A．Her teachers didn’t like her.

B．She was a poor student.

C．Some girls didn’t choose her.

D．She likes showing off herself.小题3:Which of the following is NOT true，according to the passage?

A．The writer won prizes for the best science and English exams.

B．The writer didn’t realize that her friendships with boys would cause problems.

C．The writer was sad because she failed to join the Student Union.

D．The teacher thought she was an excellent student.

新疆的绿洲主要分布在（　　）

A．盆地中心地带

B．高山山腰地带

C．山腰和山麓地带

D．盆地边缘的山前平原和部分沿河地区

急性胃炎诊断要点

墨汁负染色常用于

A．酵母菌
B．念珠菌
C．结核杆菌
D．金黄葡萄球菌
E．隐球菌

试述土地资源的基本特点。