一般补充充电时间间隔为二个月左右。

阅读理解。

       Li Hua, a middle school student in Yangzhou, doesn’t have time for breakfast. He always does his

homework until very late at night and can’t get up for breakfast the next morning. There are many other

students like Li. They don’t have healthy eating habits. Scientists from Southern University studied 1,790

students in Nanjing last year, according to the Xinhua News Agency. They found that 30% of middle

school students don’t have breakfast and 41.3 percent of students only eat the foods they like most.

      These bad eating habits may make the students fatter and affect the development of our bodies. A

study by the Ministry of Health(卫生部) in 2005 showed that about 20 percent of people aged 13 to 20

have a nutritional imbalance(营养失衡).This could cause high blood pressure and other serious problems. 

      Nutritional balance is important - especially for students. It can prevent health problems like diabetes(糖尿病). Proper nutrition(营养) also gives students enough energy to study.

      In order to improve students’ nutrition, many schools in China provide food between meals, such as

milk and fruit. Over half of Chinese middle and primary schools provide nutritious meals.

      However, some students don’t like the provided meals and have instant noodles(方便面) or KFC

instead. Hu Yongzhen, an expert from Southeast University, suggests that schools should improve their

nutritional meals in order to attract students. If possible, they should use the help of nutritional experts to

prepare meals for students.

     Tips to keep healthy:

     ★You shouldn’t eat what you like. You should eat all healthy food including meat, vegetables, fruit,

bread, noodles and milk. every day.

     ★Eat the right things for the seasons. In summer, people may sweat easily because of the hot weather. It is better to add a little more salt to food when you exercise in hot weather. And winter is coming, we can eat more red carrots which are full of vitamin C. It also helps stop a cough.

1. How many students don’t have breakfast in Nanjing last year?

A. 1,790

B. 537

C. 716

D. 358 

2.What problems may be caused if you have a nutritional imbalance?

A. High blood pressure

B. Diabetes

C. obesity(肥胖)

D. All of the above.

3. What’s the Chinese meaning of the word sweat ?

A. 增肥

B. 流汗

C. 吃东西

D. 运动

4. Which of the following is true ?

A. Bad eating habits won’t make the students fatter.

B. 30 percent of students only eat the foods they like most

C. We can eat more red carrots which are full of vitamin C.

D. Many students don’t like instant noodles(方便面) or KFC instead.

某实行监理的工程，施工合同采用《建设工程施工合同（示范文本）》GF-2013-0201合同约定，吊装机械闲置补偿费600元/台班，单独计算，不计入直接费。经项目监理机构审核批准的施工总进度计划如图5-23所示（时间单位：月）。施工过程中发生下列事件：事件1：开工后，建设单位提出工程变更，致使工作E的持续时间延长2个月，吊装机械闲置30台班。事件2：工作G开始后，受当地百年一遇洪水影响，该工作停工1个月，吊装机械闲置15台班，其他机械设备损坏及停工损失合计25万元。事件3：工作I所安装的设备由建设单位采购。建设单位在没有通知施工单位共同清点的情况下，就将该设备存放在施工现场。施工单位安装前，发现该设备的部分部件损坏，调换损坏的部件使工作I的持续时间延长1个月，发生费用1.6万元。对此，建设单位要求施工单位承担部件损坏的责任。事件4：工作K开始之前，建设单位又提出工程变更，致使该工作提前2个月完成，因此，建设单位提出要将原合同工期缩短2个月，项目监理机构认为不妥。

确定初始计划的总工期，并确定关键线路及工作E的总时差。

日本最早的书是用汉语写成的（）？

烧伤深度分度，错误的是（）。

A.Ⅰ度烧伤

B.深Ⅰ度烧伤

C.浅Ⅱ度烧伤

D.深Ⅱ度烧伤

E.Ⅲ度烧伤

用萎凋槽萎凋鲜叶，春季只需鼓凉风，夏季（雨季）需鼓热风，但温度一般控制在（）以下。

A.20℃

B.25℃

Ｃ.35℃

Ｄ.50℃