利润率水平是行业兴衰程度的一个综合反映，一般都有“低——稳定——高——严重亏损”的过

When very small dinosaur bones were found in a Germany mine, people thought they were from baby dinosaurs. ___小题1:_ Martin Sander's work shows that they were probably fully __小题2:__ (grow) and belong to the smallest giant dinosaur species ever found.

Growth marks on dinosaur bones are similar __小题3:__ growth rings on trees. The rings are far apart while the animal is young and growing quickly. __小题4:__ get closer as growth slows. "It is _小题5:__ (exact) these tight ring marks that we found in the fossil bones," says Sander. So the fossils must have been from adult animals.

__小题6:__ was this German dinosaur so much smaller than other giant dinosaurs, which grew up to 45 metres long and weighed as much as a thousand humans?

150 million years ago, most of Germany was underwater. Scientists think that __小题7:__ water levels rose, there was less and less land and food available. The dinosaur _小题8:__ (need) less space and food.

Since 1998, scientists have dug up more than 1,000 dinosaur fossils in the mine. It is one of the few places in the world __小题9:_ the bones and footprints of dinosaurs have been found together.

短文改错。

     下面短文中共有10处错误，错误涉及一个单词的增加、删除或修改。

     增加：在缺词处加一个漏词符号（∧），并在此符号下面写出该加的词。

     删除：把多余的词用斜线（\）划掉。

     修改：在错的词下划一横线，并在该词下面写出修改后的词。

     注意：

     1.每处错误及其修改均仅限一词；

     2.只允许修改10处，多者（从第11处起）不计分。

     We are going to take the College Entrance Exams in about ten days. Therefore, many students still

don't know how to balance their study, rest and physical exercises while prepared for the Exams. They

usually devote too much time to go over their lessons, what results in poor health and low efficiency of

learning.

     As the proverb goes, early to bed and early to rise make a man healthy, wealthy and wise. We'd

better leave us enough time to rest and sleep since it enables us learn our lessons more efficient. What's

more, a strong and healthy body is the base for our further study, future work and creative activities.

     In brief, as we are preparing for the Exams, don't forget that rest, exercise and study were equally

important.

____________________________________________________________________________

由KClO₃与MnO₂混合加热，把所得固体加水溶解、过滤后，用硝酸酸化的AgNO₃溶液检验滤液中含有Cl^-,此过程所发生的反应类型不包含

A．化合反应

B．分解反应

C．复分解反应

D．氧化还原反应

银行汇票的有效期限自出票日起( )。

A．1个月
B．1年
C．2年
D．3年

As an extinguishing agent，foam（）.

A.conducts electricity

B.should be directed at the base of the fire

C.is most effective on burning gases which are flowing

D.extinguishes by cooling oil fires below ignition temperature