问题 单项选择题 A2型题

为了评价实施改换水源降低水氟工程后的效果,在全国饮水型地方性氟中毒流行严重的10省市,采用整群抽样调查的方法,共调查1758个改换水源的工程,约占全部改水工程的97%,选择1980年实施改换水源降氟工程后,在当地出生并饮用该水8年及以上的8~12岁儿童,调查其氟斑牙患病情况,该研究属于()

A.队列研究

B.病例对照研究

C.临床试验

D.社区干预试验

E.生态学研究

答案

参考答案:E

阅读理解

Cheating is when a person misleads, deceives or acts dishonestly on purpose. 小题1:If a basketball team is for kids under 8,it's cheating for a 9-year-old play on the team. At school, in addition to cheating on a test, a kid might cheat by stealing someone else's idea for a science project. 小题2:This kind of cheating is called plagiarizing (抄袭).

小题3:Jeff is doing it by sneaking answers to a test. And it's also cheating to break the rules of a game or contest or to pretend something is yours when it isn't. When people cheat, it's not fair to other people.

It's tempting(诱惑人的) to cheat because it makes difficult things seem easy, like getting all the right answer on the rest. 小题4:And it won't help on the next test-unless the person cheats again.

小题5:They want to get good grades but hate hard work. Other kids might feel like they can't pass the test without cheating. Even though there seems to be a "good reason" for cheating, cheating isn't a good idea.

A.Some kids cheat because they're lazy.

B.Cheating can happen in a lot of different ways.

C.But it doesn't solve the problem of not knowing the material.

D.Some kids cheat once and feel so bad that they never do it again.E. For kids, cheating may happen at school, at home, or while playing a sport.

F. There are plenty of reasons why a kid shouldn't cheat, but some kids have already cheated.

G. Kids may also cheat by copying a book report off the Internet and handing it in as it's his or her original work.

问答题