关于青蛙与鸡的生殖发育过程的叙述中,错误的是[ ] A.蝌蚪只能生活在水中 B.

题型:选择题

问题:

关于青蛙与鸡的生殖发育过程的叙述中,错误的是 [ ]

A.蝌蚪只能生活在水中  

B.受精卵在母鸡的体内已经开始发育  

C.青蛙是变态发育  

D.自然状态下,鸡繁殖后代的成活率低于青蛙

考点:鸟的生殖和发育两栖动物的生殖和发育
题型:选择题

阅读理解。

     On October 12, 2005, China launched its second manned spaceship, Shenzhou VI,send- mg two

spacemen into space. It was the second time that our country had sent up manned spaceship after Shenzhou

V. China has become the third country to send people to space after Russia and the USA.

     Shenzhou VI lifted off on a Long March 2F rocket from Jiuquan,Gansu Province.Two spacemen Fei

Junlong and Nie Haisheng traveled around the earth 80 times in 115 hours and thirty-two minutes and landed

safely in the Inner Mongolian grasslands on October 17, 2005.

     The spaceship has three modules (飞船舱): the orbital module where scientific experiments (实验) like

testing space foods and drinks are done; the re-entry capsule where the spacemen spent most of their time.

and the service module,which has fuel (燃料), air and other technical equipment (技术设备) in it.

    Unlike Yang Liwei's space trip two years ago, Fei and Nie went up and down between the modules for

scientific experiments. For the first time, they took off their space suits and moved around in the modules

freely. From space, Fei and Nie could make long distance calls to their families at the launch centre. Nie's

daughter even sang "Happy Birthday" to her Dad during the phone call. .

    It is said that our country will launch Shenzhou VII in 2007. The plan for Shenzhou VII is to make

China's first space walk possible. Later, Shenzhou VIll will start to build China's first space station. China

also plans to land on the moon by 2010.

1. So far, ______ have sent people into space.

A. China, UK and USA

B. China, Russia and USA

C. China, USA and Japan

D. China, Russia and UK

2. The spacemen Fei and Nie traveled around the earth for nearly ______ days.

A. 4

B. 5

C. 6

D. 7

3. We can infer (推断) Fei and Nie had foods and drinks in ______ in the spaceship.

A. the orbital module

C. the service module

B. the reentry capsule

D. the launch centre

4. Which statement (陈述) is NOT RIGHT according to the passage?

A. Shenzhou V1 was sent up into space in Gansu Province.

B. The re-entry capsule has rule and air in it.

C. Nie Haisheng spent his birthday in the spaceship.

D. China will probably walk in space one day.

5. Of the following, which order is right?

①The spacemen took off their space suits and moved around in the modules

②Shenzhou VI 1anded in the Inner Mongolian grasslands.

③A Long March 2 F rocket was sent up into space.

④Shenzhou V traveled around the world.

A. ③④②①

B. ④③①②

C. ③①④②

D. ④③②①

题型:选择题

单跨超静定梁在荷载单独作用下引起的杆端弯矩称为()。

题型:选择题

某小儿经检查:体重10.8kg,身长 80cm,头围47cm,胸围47cm,上部量42cm。前囟门已闭。出牙11颗。

根据以上情况,您估计该小儿最可能接近以下哪个年龄

A.8个月

B.12个月

C.18个月

D.24个月

E.28个月

题型:选择题

除皱术后出现小面积和表浅皮肤坏死的原因,说法不正确的是()。

A、皮瓣分离过薄损伤血供

B、血肿未得到及时处理而导致感染、皮肤坏死

C、吸烟者皮肤坏死发生率高于不吸烟者

D、电刀误烧局部皮肤

E、张力过小

题型:选择题

《劳动合同法》于2007.6.29第10届全国人民代表大会常务委员会通过,自()起实施。

A.2008.1.1

B.2007.9.1

C.2008.3.1

更多题库