RC
有一题阅读寂静没见过,
第一段讲在galaxy之间有很多gas,这些gas会emit x-ray,由于x-ray会发散能量,所以会慢慢降低这些gas的温度,最后会cool down,然后会沉淀下来
第二段讲科学家新观察到的某个星系,这些galaxy之间的gas里面发现很多bubble,bubble里面充满magnetic field。然后这些gas的温度很高,于是科学家怀疑是这些gas阻止了温度的变低
第三段讲这些bubble可能形成的原因,是galaxy中间有个黑洞在转。黑洞把物质从一端吸引过去然后又喷发出来形成的(不要问我黑洞为什么会喷发)。
第四段讲,这个bubble可能是一个cyclic现象,最后黑洞会转的慢下来了,bubble变小,然后也会cool down
主旨题,我选的discuss a new research findings
SC
隐约记得有题考比较的(提干大概就是以下意思)
they sold more *** in year 1990 than (。。。)in 1980
- the number sold (有两个都是这个结构,要排除因为不对称)
正确答案应该在下面两个选项中(至少结构一致)
- have sold
- they have sold
辛苦楼主!楼主是个作文吗 求确认
The following appeared in the letters-to-the-editor section of a local newspaper.
“Muscle Monthly, a fitness magazine that regularly features pictures of bodybuilders using state-of-the-art exercise machines, frequently sells out, according to the owner of Skyview Newsstand. To help maximize fitness levels in our town’s residents, we should, therefore, equip our new community fitness center with such machines.”
SC
隐约记得有题考比较的(提干大概就是以下意思)
they sold more *** in year 1990 than (。。。)in 1980
- the number sold (有两个都是这个结构,要排除因为不对称)
正确答案应该在下面两个选项中(至少结构一致)
- have sold
- they have sold