下列属于表皮上的附属结构的有（）。 A.表皮毛 B.腺毛 C.蜡被 D.精油腔

栽培同一品种西瓜，甲地西瓜比乙地的含糖量高。经调查，在西瓜生长季节，两地光照条件和栽培措施基本相同，而温度条件差别较大，详见下表。下面有关分析，错误的是

	甲地平均温度（℃）	乙地平均温度（℃）
白天	33	33
夜里	12	25

A. 甲地西瓜消耗有机物的量比乙地的少

B. 甲地西瓜的呼吸作用比乙地的弱

C. 在一定范围内，环境温度越高，植物的呼吸作用越强

D. 甲地西瓜通过光合作用制造的有机物的量大于乙地

孟子说：“尽其心者，知其性也。知其性，则知天矣。”在哲学观点上，下列与此说法有一致性的是 [ ]

①“循明实而定是非，因参验而审言辞”——韩非子

②“感觉是人与世界之间的屏障”——休谟

③“古人之观于天地山川，往往有得，以其求思之深而无不在也。”——王安石

④“物体不能限制思想，思想也不能限制物体”——斯宾诺莎

A．①②

B．②④

C．①③

D．③④

下列对改革开放的认识正确的是

①改革开放是社会主义中国的强国之路，是决定当代中国命运的历史性决策 

②改革开放是新时期中国最鲜明的特点 

③改革开放是兴国之要 

④改革开放的方向和道路是完全正确的

A．①②③

B．②③④

C．①②④

D．①②③④

Walking through my train yesterday, staggering from my seat to the buffet and back, I counted five people reading Harry Potter novels. Not children—these were real grown-ups reading children’s books.

Maybe that would have been understandable. If these people had jumped whole-heartedly into a second childhood it would have made more sense. But they were card-carrying grown-ups with laptops and spreadsheets returning from sales meetings and seminars. Yet they chose to read a children’s book.

I don’t imagine you’ll find this headcount exceptional. You can no longer get on the London Tube and not see a Harry Potter book. Nor is it just the film; these throwback readers were out there in droves long before the movie campaign opened.

So who are these adult readers who have made JK Rowling the second-biggest female earner in Britain (after Madonna) As I have tramped along streets knee-deep in Harry Potter paperbacks, I’ve mentally slotted them into three groups.

First come the Never-Readers, whom Harry has enticed into opening a book. Is this a bad thing Probably not. Writing has many advantages over film, but it can never compete with its magnetic punch. If these books can re-establish the novel as a thrilling experience for some people, then this can only be for the better. If it takes obsession-level hype to lure them into a bookshop, that’s fine by me. But will they go on to read anything else Again, we can only hope.

The second group are the Occasional Readers. These people claim that tiredness, work and children allow them to read only a few books a year. Yet now—to be part of the crowd, to say they’ve read it—they put Harry Potter on their oh-so-select reading list. It’s infuriating, and maddening. Yes, I’m a writer myself, currently writing difficult, unreadable, hopefully unsettling novels, but there are so many other good books out there, so much rewarding, enlightening, enlarging works of fiction for adults; and yet these sad cases are swept along by the hype, the faddism, into reading a children’s book.

The third group are the Regular Readers, for whom Harry is sandwiched between McEwan (英国当代作家) and Balzac, Roth (德国现代诗人) and Dickens. This is the real baffler—what on earth do they get out of reading it Why bother But if they call rattle through it in a week just to say they’ve been there—like going to Longleat (朗利特山庄，英国名胜) or the Eiffel Tower—the worst they’re doing is encouraging others.

The author believes that many adults read Harry Potter ().

A. to follow suit

B. to kill time

C. to enjoy a second childhood

D. to share Harry’s adventures

采用PID调节的自动控制系统，为实现纯比例作用，应该（）。

A.全关比例阀和全关微分阀

B.全关比例阀和全关积分阀

C.全开微分阀和全关积分阀

D.所有调节阀全部关闭