泡沫枪在喷射时，应顺风方向喷射，防止泡沫喷溅，影响灭火效能。

头颅平片上可见到下列哪些结构的压迹（）

A.脑膜中动脉

B.板障动脉

C.蛛网膜颗粒

D.导静脉

E.以上均可

在（）中所能反映的物流成本在整个销售额中只占很小的比重，因此物流的重要性当然不会被认识到，这就是物流被称为"黑暗大陆"的一个原因。

A.损益表

B.效益表

C.绩效表

D.利益表

下表为元素周期表的一部分，请参照元素①～⑧在表中的位置，用化学用语回答下列问题：

（1）④、⑤、⑥的原子半径由大到小的顺序是_________________________________________。

（2）②、③、⑦的最高价含氧酸的酸性由强到弱的顺序是________________________________。

（3）①、④、⑤、⑧中的某些元素可形成既含离子键又含极性共价键的化合物，写出其中一种化合物的电子式：___________________________________________________________。

（4）由表中两种元素的原子按1∶1组成的常见液态化合物的稀溶液易被催化分解，可使用的催化剂为（填序号）________。

a．MnO₂     b．FeCl₃    c．Na₂SO₃     d．KMnO₄

.

This is my third day of the English camp here in Australia. It has been an amazing experience. I can’t believe how many different nationalities are here. Because we all speak so many different languages, we are forced to use our English in order to communicate. I really like Jim, the leader of my small group. There are only five other students in our group; Jim is very easy-going and is very good at getting all of us to chat and have fun together.

There are classes every day, but they are not boring, like my English classes at school. We learn new vocabulary every day and then must practice it immediately in conversation or in real life situations. The teachers are very professional---and very skilled at making us feel comfortable and eager to talk. The writing classes are the most difficult for me; the teacher is very strict, but I like her a lot. She has very high standards, but her step-by-step method leads us slowly but surely to her final goal.

I can feel myself growing a lot personally. In just three days, I have much more confidence than ever before to express myself in English. I’ve also noticed that I’m much more comfortable with different kinds of people---not nearly so shy as when I’m at home. It seems that being shy is just my way of hiding when I’m afraid. Here at the camp, the teachers and other leaders have kindly but firmly forced me to push past my fear. I’m learning a lot about myself. In fact, after staying here for only three days, I have realized that in the past I used my shyness as an excuse for my poor English. I’ve realized that I’m not really being shy, but I’m being afraid of embarrassment--- and my fear has hurt not only my English ability but my social skills. Here at the camp I’m not only learning English but also learning how not to be afraid.

68. Which of the following statements is true according to the passage?

A. The English Camp only offers a three-day study.

B. The writer is the leader of his small group.

C. There are altogether five members in the writer’s group.

D. The members in the English camp are from different countries.

69. What does the writer think of his English classes at school?

A. They are not boring.

B. They are dull.

C. They are interesting.

D. He likes them better than the classes in the English camp.

70. What can we learn about the writer from the passage?

A. His English used to be poor because of his shyness.

B. His English used to be poor because of his fear.

C. He doesn’t like English.

D. He is not as comfortable with different kinds of people as at home.

71. By saying “my fear has hurt not only my English ability but my social skills”, the writer means all of the following except ________.

A. he has learnt both English and social skills in the English camp

B. he has much more confidence than ever before to express himself in English now

C. he has grown a lot personally at the English Camp

D. he is not learning much about himself at the English Camp

对于没有累及眼眶、眼球的眼睑基底细胞癌患者，首选的治疗方案是（）。

A.单纯放疗

B.单纯手术

C.手术+术后放疗

D.手术+术后化疗

E.手术+术后的同步放化疗