此处是形容词性物主代词修饰名词, 故答案为its。

10. are made。考查谓语动词的被动语态。句意: 大人和小孩一看到Peppa就被逗笑。结合句意可知此处用放动语态, 故答案为are made。

热点话题4人类首次发现银河系外行星

Found First Evidence of Planets Outside the Milky Way

It is common these 1 (day)to hear about the discovery of new planets orbiting(绕轨道运行)some distant star. But so far all of those planets have been in our galaxy(星系), 2 is known as the Milky Way.

Now, astrophysicists from the University of Oklahoma have reported, for 3 first time, evidence of much more distant planets-wandering through a galaxy some 3. 8 billion light years away. "This is the first time that we 4 (discover)planets outside our galaxy, said Xinyu Dai at the University of Oklahoma.

Dai and Eduardo Guerras, a postdoctoral researcher, studied data 5 (gather)by NASA's Chandra X-ray Observatory. From their data, they believe they have found evidence of at least 2, 000 planets, 6 (range)from the mass of the Moon to that of Jupiter. These planets are moving through the galaxy or 7 (loose)orbiting between stars. The results of their study 8 (publish)in the journal The Astrophysical Journal Letters.

"This galaxy is located 3. 8 billion light years away, and there is not the 9 (slight)chance of observing these planets directly, not even with the best telescope one can imagine in a science fiction story, "Dai said. "However, we are able to study them and even have an idea 10 their mass. This is very cool science. "

答案热点话题4

【文章大意】本文为新闻报道, 主要围绕人类首次发现银河系外行星来展开。

1. days。考查名词的数。根据空前的these可知, 此处要用day的复数形式。

2. which。考查定语从句。分析句子结构可知, 空处所填词引导一个非限制性定语从句, 先行词为our galaxy, 关系词在从句中作主语, 故用which。

3. the。考查冠词。for the first time是固定搭配, 意为"第一次"。

4. have discovered。考查时态和语态。在This/It is the first(second, third. . . )time that. . . 句型中, that引导的从句常用现在完成时。且we与discover为主谓关系, 故填have discovered。

5. gathered。考查非谓语动词。空处所填词作后置定语, gather与data是被动关系, 该动作已完成, 故用过去分词。

6. ranging。考查非谓语动词。空处应填非谓语动词。planets与range之间是主谓关系, 且此处非谓语动词表示被修饰事物长久的特征, 故用现在分词作非限制性定语。

7. loosely。考查副词。所填词修饰现在分词orbiting, 故用词loosely。

8. were published。考查谓语动词。此处描述过去的事实, 要用一般过去时; 主语与publish是被动关系, 故谓语动词用被动语态; 主语的中心词是results, 故谓语要用复数形式, 所以此处填were published。

9. slightest。考查形容词的级。根据语境和空前的the及空后的best可知, 此处