访问控制有几种常用的实现方法？它们各有什么特点？

— Are your parents satisfied with your performance at home?

—_____ but not exactly. They want me to do more housework.

A．Kind of

B．Just the opposite

C．On average

D．By all means

市场机制是指市场诸要素之间相互联系和作用的制约关系及其调节功能，其核心机制是供求机制。( )

书面表达。

     假如你是李华，福建省某中学高三学生，请你根据以下图示，用英语写一封信给某中学生英语报。

谈谈自己对边做事边听音乐的看法。

     注意：1. 要写出自己的看法（赞成或不赞成）、事例、理由和结论；

               2. 短文开头和结尾已给出，不计入总词数；

               3. 词数：120左右。

Dear editor,

     I'm a student of Senior Three of a middle school in Fujian Province. I'd like to tell you my opinion about

a kind of common behavior I have noticed. It seems that many students enjoy listening to MP3 players while

doing other things. ________________________________________________________________________

________________________________________________________________________________________

                                                                                                                                   Yours sincerely,

                                                                                                                                   Li Hua

男性，36岁，诊断为风湿性心脏病二尖瓣狭窄，不会出现的症状是

A．声嘶
B．心绞痛
C．劳累性气促
D．咳嗽、咳痰
E．咯血、咳粉红色泡沫痰

第一产程末宫腔最大压力可达（）

A.20～30mmHg

B.25～30mmHg

C.30～50mmHg

D.40～60mmHg

E.50～70mmHg