肾癌血尿的特点是A．镜下血尿 B．肉眼血尿 C．持续性全程血尿 D．腰痛伴血尿 E．

Your teenage years should be the most exciting and enjoyable years in your life. Here is some advice     ①    how you can get the most during the time.

Be Happy 

You are young and full of energy. (72) There are lots of things you don’t have to worry about. You don’t need to worry about where to get your meals, where to sleep at night, or how to make money. During the time without a lot of worries, you should try your best to be happy every day.

Be Healthy 

As a teenager, you will experience many changes in your body. So during the time you should learn to take care of yourself. Keep yourself clean and eat the right kinds of food. (73) What you are doing now will help you keep healthy in the future.

Be Wise 

Keep close contact (接触) with your parents and other older people. You may have ten thousand questions as you come into this new stage of life. This is the time when you actually need your parents’ guidance (指导) and support. 

Choose Your Friends 

The friends you make will have a great     ②    on your teenage life. Choosing the right friends will save you a lot of trouble and sadness in the future.

Think over the above advice and try to enjoy your teenage years. As these years pass, you can prepare yourself for a good future.

任务一：请根据短文内容，分别写出①、②处所缺单词。（每空限填一词）

小题1:① _____________                ② ______________

任务二：请把上文中画线的句子翻译成汉语。

小题2: ________________________________________________________________

小题3: ________________________________________________________________

任务三：请根据短文内容回答下列问题。

小题4:How many suggestions are given to teenagers in this passage?

________________________________________________

小题5:Why should teenagers choose right friends according to the passage?

Because _________________________________________________________.

患者，男性，18岁，近两周出现持续性低热，头痛不适，四肢酸痛，食欲不振，3天前，出现腹部胀痛，腹泻，大便呈暗红色，入院前6小时突然出现右下腹剧痛，迅速弥漫至全腹。查体：一般状态差，呈恶液质状态，腹胀，全腹压痛，尤以右下腹明显肠鸣音消失，白细胞 16×10⁹/L，X线腹部透视见膈下游离气体，诊断应考虑为

A．十二指肠溃疡穿孔

B．肠伤寒穿孔

C．急性阑尾炎穿孔

D．美克耳憩室炎穿孔

E．以上都不是

消化道恶性肿瘤发生血行转移最先受累的是（）

A.脑

B.肺

C.胰

D.肝

E.肾

下列哪些器官不能氧化利用乳酸（）

A.心脏

B.脑

C.肌肉

D.肝脏

E.肾脏