使用氢火焰离子化检测器时，三种气体流速比为：氮气：氢气：空气=（）。A.10∶1∶1

牙周维护治疗期应为

A．3个月

B．6个月

C．8个月

D．10个月

E．12个月

As a professor at a large American university, there is a phrase that I often hear from students: “I’m only a 1,050.” The unlucky students are speaking of the score on the Schoolastic Aptitude Test (SAT), which is used to determine whether they will be admitted to the college or university of their choice, or even if they have a chance to get a higher education at all. The SAT score, whether it is 800, 1,100 or 1,550, has become the focus at his time of their life.

It is obvious that if students value highly their test scores, then a great amount of their self-respect is put in the number. Students who perform poorly in the exam are left feeling that it is all over.The low test score, they think, will make it impossible for them to get into a good college. And without a degree from a prestigious university, they fear that many of life’s doors will remain forever closed.

According to a study done in the 1990s, the SAT is only a reliable indicator of a student’s future performance in most cases. Interestingly, it becomes much more accurate when it is set together with other indicators--like a student’s academic proficiency(学业水平).They will never be able to test things like confidence, efforts and willpower, and are unable to give us the full picture of a student’s potentialities. This is not to suggest that we should stop using SAT scores in our college admission process. The SAT is an excellent test in many ways, and the score is still a useful means of testing students. However, it should be only one of the many methods used.

小题1: The purpose of the SAT is to test students’ _________.

A．strong will

B．academic ability

C．full potentialities

D．confidence in school work小题2: Students’ self-respect is influenced by their_______.

A．scores in the SAT

B．achievements in mathematics

C．job opportunities

D．money spent on education小题3:“ A prestigious university” in para.2 is most probably _______.

A．a famous school

B．a technical school

C．a traditional school

D．an expensive school小题4: The passage is mainly about_______________.

A．how to prepare for the SAT

B．stress caused by the SAT

C．American higher education

D．the SAT and its effects小题5: What is the writer’s attitude towards the SAT?

A．Subjective

B．Objective

C．Critical

D．Approving

简单描述风沙和浮尘在卫星图像上的表现特征。

以下关于特殊情况下工资的表述，正确的是（）。

A.劳动者出任人民法庭证明人而占用生产或工作时间时，用人单位应按劳动合同规定的标准支付工资

B.安排劳动者延长工作时间的，应支付不低于工资的%的工资报酬

C.劳动者连续工作一年以上的，享受带薪年休假

D.非因职工本身过失造成的停工一般按本人标准工资100%发给停工津贴

治疗呃逆首选（）

A.期门

B.梁门

C.丝竹空

D.攒竹

E.膈俞