题干

古罗马地理博物学家普林尼说:“遥远的东方丝国在森林中收获丝制品,经过浸泡等程序的加工,出口到罗马,使得罗马开始崇尚丝制衣服”,“保守估计,印度、塞雷斯(中国)和阿拉伯半岛每年可以通过贸易从罗马帝国赚取一亿银币的利润,这便是我们罗马帝国的妇女每年用作购买奢侈品的花费”。此材料主要说明(    )

A:中国与欧洲各国交往密切

B:丝绸之路将欧亚大陆联系起来

C:两汉经济发展,丝织业发达

D:罗马对丝绸的旺盛需求

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B

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    Homework is a major part of going to school: It's your teachers' way of evaluating(评价) how much you understand of what's going on in class.____ Luckily, you can do a few things to make homework less work.

    Be sure you understand the homework.

    Write your homework down in your notebook or day planner if you need to.____It's much easier to take a minute to ask the teacher during or after class than to struggle to remember later that night!

    Use any extra time in school.

    Many schools have study halls that are specifically designed to allow students to study. It's tempting(诱惑) to hang out with friends during study periods or unstructured(松散的) time.____

    Take a break.

    ____ So take some breaks while doing your homework. Sitting for too long without stretching or relaxing will make you less productive than if you stop every so often. Taking a 15 minute break every hour is a good idea for most people.

    ____

    If you don't finish your homework during school, think about how much you have left and what else is going on that day, and then budget your time. Most high school students have between 1 and 3 hours of homework a night. If it's a heavy homework day and you've got an assignment in every subject, you'll need to devote more time to homework. It's a good idea to come up with some kind of homework schedule, especially if you are involved in sports or activities or have an after school job.

A. Make a homework schedule.

B. Settle down to do homework.

C. And it helps digest important concepts.

D. Most people's attention spans (跨度) aren't very long.

E. Don't be afraid to ask questions about what's unknown.

F. Once your homework is done, you can check over it if you have extra time.

G. But the more work you can get done in school, the less you'll have to do that night.