用于室上性心律失常、心绞痛、高血压、肥厚性心肌病是（） A.硝苯地平 B.氨氯地平

— What do you think of these two books?

— _____ of them are interesting. And I've read them several times. [ ]

A. Both　

B. Neither　

C. None　

D. Either

某同学利用如图所示装置进行实验，一段时间后，水沿导管缓慢上升，下列说法错误的是（　　）

A．实验过程中气球体积会发生变化

B．广口瓶内中液体的pH值减小

C．广口瓶中有化合反应发生

D．试管中不可能发生分解反应

根据B市住户抽样调查显示，1985年户籍居民人均可支配收入为1915元，到1994年，户籍居民人均可支配收入首次突破万元大关，达10503元，九年间年均增长20.8%。随后又经过了六年时间，至2000年，户籍居民人均可支配收入为20906元，六年间年均增长12.2%。至2004年户籍居民人均可支配收入达到27596元，比1985年增长了13.4倍，年均增长15.1%，扣除价格因素，实际年均增长7.0%。2009年该市户籍居民人均可支配收入达到29245元，比2005年增长了36.1%。

根据所给资料，下列说法不正确的是（）

A．B市户籍居民人均可支配收入经过5年的时间从1万元增长到了2万元

B．近年来，价格因素对居民人均收入的增长起到了一定的抑制作用

C．2005年户籍居民人均可支配收入比5年前增长了588元

D．户籍居民人均可支配收入自2000年以后增速有所减缓

A conventional teacher’s licensee usually requires a university degree in education plus an unpaid term of practice teaching. This has never made much sense. It excludes bright students who take degrees in other subjects, and might teach those subjects; it is costly and time-consuming for career-switchers, who must wait a year or more before they can enter a classroom; it is so rigid that private-school teachers or university professors with years of experience have to jump through hoops before they can start teaching in a state school. And there is virtually no evidence that it creates better teachers. For all that, it is ply backed by schools of education, which have a monopoly of teacher-training, and by teachers’ unions, whose members make more money when it is artificially hard for others to get into the profession.

Now, some 45 states and the Districts of Columbia offer an "alternative route" to a teacher’s licensee, up from only a handful in the 1980s. Alternative certification (AC) generally allows individuals with a university degree to begin teaching immediately after passing an entrance examination. These recruits, watched over by a mentor teach the subject they studied at university, and take education courses at a sponsoring university while drawing their salaries.

The traditional sort of American teacher is likely to be young, white and female. Alternative certification attracts more men and more non-whites. In Texas, for instance, roughly 90% of public-school teachers are white, but 40% of those who have joined through alternative certification are non-whites. The AC route also draws teachers willing to go where they are most needed. A survey of Troops to Teachers, a program that turns exsoldiers into public-school teachers (" Proud to serve again"), found that 39% of those taking part are willing to teach in inner-city schools, and 68% in rural areas.

Are they good teachers Officialdom is reluctant to release the details which might answer that question for certain. But anecdotal evidence suggests they do well. In New Jersey, which has been running this sort of program since 1984, rich districts, which can afford to be choosy, consistently hire more AC teachers than poor districts do. In Houston, Texas, where the Teach of America program (TFA) puts recent university graduates into poor communities as teachers, the most effective teachers are generally the TFA ones. " School principals are our biggest fans," Wendy Kopp, TFA’s president, says proudly.

So why not scrap the cumbersome teacher-licensing laws Frederick Hess, a professor at the University of Virginia, has written a paper for the Progressive Policy Institute arguing that teacher-licensing ought to be stripped to the bare essentials. Prospective teachers should be required only to hold a college degree, pass a test of essential skills, and be checked to make sure they do not have a criminal background. Other training is important, argues Mr. Hess, but the market, not state legislators, should decide what that training looks like. This notion of "competitive certification" has drawn favorable attention from the Bush administration.

What does the author suggest when he calls for "competitive certification" ( Line 7—8, Para.5 ) （）

A.Simplify teacher-licencing

B.Operate education like a market

C.Scrap unified education standard

D.Make entry easy for prospective teachers

油气井聚能射孔弹质量检验时，综合技术要求中包装每箱质量不得超过（）。

A、50kg

B、45kg

C、40kg

D、30kg