题目内容
Wearing white can help people _______when they feel stressed.| A．fall down | B．calm down | C．look down | D．come down |
B解析:
略
略
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What’s the red star in the sky through a telescope(望远镜)? It is Mars. Do you want to know more about it? Take the “Mars Orbit Express”!
“Mars Orbit Express” is a space probe (探测器). It was sent towards Mars by American scientists on August 12th，2005. Its tasks are to study Mars’ atmosphere and return photos to Earth. But before that “Mars Orbit Express” must travel about 100 hundred million kilometers and seven months. It reached Mars’ orbit(轨道)in March，2006.
Mars and Earth have similar weight and size. However，Mars is closer to the sun than Earth. Mars is very cold. The average temperature is below 50℃. The temperature at noon only reaches 20℃ during a Mars day. Its atmosphere is mostly CO2. It has much sand and two moons---Phobos and Deimos.
Scientists think Earth and Mars had similar beginnings 4.6 billion years ago. But while Earth supports millions of lives，Mars becomes bad. “Earth easily could have turned out like that.” said an scientist, “It is important for us to find out why and Mars Orbit Express’ should do that.”“Mars Orbit Express” also would help scientists to learn what might happen to Earth in the future. “Mars Orbit Express” would work for about four years.
【小题1】 What can you see through a telescope when watching Mars? ________.
【小题2】One of the tasks of Mars Orbit Express is _______.
【小题3】Compared with Earth，_______.
【小题4】 Which might be the proper title for the passage?
“Mars Orbit Express” is a space probe (探测器). It was sent towards Mars by American scientists on August 12th，2005. Its tasks are to study Mars’ atmosphere and return photos to Earth. But before that “Mars Orbit Express” must travel about 100 hundred million kilometers and seven months. It reached Mars’ orbit(轨道)in March，2006.
Mars and Earth have similar weight and size. However，Mars is closer to the sun than Earth. Mars is very cold. The average temperature is below 50℃. The temperature at noon only reaches 20℃ during a Mars day. Its atmosphere is mostly CO2. It has much sand and two moons---Phobos and Deimos.
Scientists think Earth and Mars had similar beginnings 4.6 billion years ago. But while Earth supports millions of lives，Mars becomes bad. “Earth easily could have turned out like that.” said an scientist, “It is important for us to find out why and Mars Orbit Express’ should do that.”“Mars Orbit Express” also would help scientists to learn what might happen to Earth in the future. “Mars Orbit Express” would work for about four years.
【小题1】 What can you see through a telescope when watching Mars? ________.
| A．Much sand | B．A red star | C．Its atmosphere | D．Its size |
| A．taking pictures of Mars |
| B．studying the weight of Mars |
| C．finding out distance between Earth and Mars |
| D．telling the time it takes to go from Earth to Mars |
| A．Mars has a long history | B．Mars is big and heavy |
| C．Mars is close to the sun | D．Mars’ atmosphere is mainly O2. |
| A．Mars：differences from Earth | B．A probe：to learn more about Mars |
| C．Mars: change of temperature | D．A probe：to tell the future of Earth |
Mother told me ______ in bed because it’s bad for eyes.
| A．don’t read | B．not to read | C．not read | D．to not read |
—How well do you know the Opera House?
—I know the place very well. I ____ Sydney many times.
—I know the place very well. I ____ Sydney many times.
| A．have been in | B．have been to | C．have gone to | D．have arrived in |
—We need a new leader for our Helping Hands Club，but I don’t know_______.
—Why not Mary? She is always willing to help others.
—Why not Mary? She is always willing to help others.
| A．what to choose | B．how to choose | C．when to choose | D．who to choose |
下列与生物遗传有关的叙述，正确的是（ ）
| A．基因型为Aa的个体连续自交3代后，子代中隐性性状个体所占的比例为3/8 |
| B．已知黑斑蛇与黄斑蛇杂交，子一代既有黑斑蛇又有黄斑蛇，若再让F1黑斑蛇自由交配，F2中有黑斑蛇和黄斑蛇，可据此判断蛇斑的显隐性 |
| C．基因分离定律的实质表明，基因型为Bb的动物，在其精子形成过程中，基因B与B分开发生在初级精母细胞形成次级精母细胞时，B与b的分开发生在次级精母细胞形成精细胞时 |
| D．用豌豆进行遗传试验，杂交时须在开花前除去母本的雌蕊，人工授粉后应套袋 |
下列关于兴奋在突触处传导的叙述，正确的是( )
| A．兴奋只能从突触前膜传向突触后膜 |
| B．神经递质的释放，不需要消耗细胞代谢产生的能量 |
| C．突触后膜上的每种受体均可以和多种神经递质结合 |
| D．在突触处传递兴奋时，兴奋由化学信号转变成电信号再转变成化学信号 |
It is hard to imagine what life __________ in 100 years.
| A．will like | B．will be like | C．likes | D．might like |
—I seem to be lost. Could you tell me _____?
—Sure. You can take the No.3 bus to get there.
—Sure. You can take the No.3 bus to get there.
| A．where is the nearest hospital | B．how long it will take me to the airport |
| C．how far is my trip to the Olympic Village | D．how I can get to the National Museum |