心肌细胞彼此相连形成功能整体的结构是:()。A.T小管 B.肌浆网 C.闰盘 D.肌

题型:单项选择题 A型题

问题:

心肌细胞彼此相连形成功能整体的结构是:()。

A.T小管

B.肌浆网

C.闰盘

D.肌丝

E.二联体

考点:生物学组织学与胚胎学组织学与胚胎学题库
题型:单项选择题 A型题

女娄菜是雌雄异株的植物,性别决定类型属于XY型。其叶片形状有阔叶和窄叶两种类型,由一对等位基因(E、e)控制,某同学进行了如下杂交试验。

(1)阔叶是由_________基因控制,位于_________上。带有基因e的花粉__________。

(2)请画出杂交组合③的遗传图解

题型:单项选择题 A型题

下列有关新经济的描述正确的是()

A.新经济提高了劳动生产率

B.新经济增加了就业

C.新经济压低了通货膨胀

D.新经济消除了通货膨胀

E.新经济提高了实际工资

题型:单项选择题 A型题

牙髓炎、智齿冠周炎引起的疼痛属于()

A.炎症性疼痛

B.创伤性疼痛

C.肿瘤性疼痛

D.神经性疼痛

E.关节疼痛

题型:单项选择题 A型题

How many of us would temp for three years while we waited for the perfect job Not many of us, perhaps. But Wentworth Miller, the "Prison Break" star, said he chose to wait even longer time (1) he found the right job.
"Actually I think it might have been three or four years until I was lucky enough to get guest (2) on TV shows," said Miller, 34, who rose to international stardom (3) to "Prison Break" in 2006. That kind of patience and p will was portrayed in "Prison Break". Miller (4) engineering wizard Michael Scofield, who tries everything to break out of a Chicago (5) with his brother. Miller said he was fond of his character, (6) he said "exists in shades of grey".
Miller comes from a (7) of teachers. He said he didn’t seem fated for a career in the arts, (8) his passion for acting. After (9) from Princeton with an English degree, he moved (10) his parents’ request to Los Angeles to look for a stable life. He started (11) in a little company that made television movies. This (12) simply faxing, filing, walking the boss’ dog and going to the store for the boss’ lunch. Every weekend during the summer, Miller (13) go to the office (14) he didn’t have air-conditioning. "I would hang (15) in the conference room and set up camp and rob the company kitchen," recalled Miller.
(16) , Miller realized he still had questions about his choice. He decided to quit. But the boss said he was making a mistake and offered him a well-paid assistant position. "I eventually (17) that if I did the corporate job, it would be great if I was successful, but I would always wonder about the (18) . If I did the acting and was successful, I would never wonder (19) that job," he explained. He quit and temped (20) many people in the entertainment industry.
Now, he’s a hot star and has people coming up to him at film festivals saying, "Weren’t you the one who (21) to stand by the copy machine "
"That was tough, but I’m glad I have that perspective. Because now I’m at a point (22) big shots laugh at all my jokes and I think, You know, I got coffee for people like you for six years’. So I know what’s (23) , because I’ve seen the other side." But what if, when he was offered the corporate job, there had been more money "It was never about the (24) There’s a kind of excitement that comes along with acting. I can’t find it anywhere else. Even if I had to go back to temping, even if this is not the beginning of an amazing career, I would not (25) making that jum
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题型:单项选择题 A型题

关于戒烟,您认为下列说法哪些正确:()

A、戒烟越早越好;

B、只要戒烟,就对健康有好处;

C、烟瘾是无法戒掉的;

D、老年人没必要戒烟;

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