全球变化与水关系的研究主要侧重于海洋。

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问题:

全球变化与水关系的研究主要侧重于海洋。

考点:生态学全球变化生态学全球变化生态学题库
题型:判断题

设抛物线,(t为参数,p>0)的焦点为F,准线为l。过抛物线上一点A作l的垂线,垂足为B。设C(p,0),AF与BC相交于点E。若|CF|=2|AF|,且△ACE的面积为,则p的值为()。

题型:判断题

阅读理解。

     Summer vacation is just around the corner! It's time to throw your pencils in the air, your book bags onto

the floor and give yourself a break after a year of hard work. How about a movie or two? Teens have picked

some hot films that will come out this summer. So get yourself some popcorn, sit back and enjoy!

     Journey to the Center of the Earth 3D, July 11

     Trevor is a science professor with radical theories and many crazy ideas. While backpacking across Iceland

with his nephew Sean, the two explorers find a cave that leads them deep down into the bowels of the planet.

There, they discover a fantastic and dangerous lost world. They even meet dinosaurs and many animals that

have disappeared from the earth.

     However, the burst of a volcano causes the temperature to rise. They have to make a bravery escape before

the heat and other dangers can beat them.

    Space Chimps, July 18

    Ham III is not an ordinary chimp (黑猩猩). He is the grandson of the first chimpanzee in space. When a

NASA probe (探测器) disappears into a galaxy (星系), Ham III is recruited (招募) to help bring back the craft.

But Ham is a free-spirited performer who is more interested in having fun than stepping into grandpa's shoes.

But the lazy chimp does become a hero at last. He learns the true meaning of courage as he and his workmates

go to a lot of trouble to save the peaceful people of a distant planet from an evil king.

    The Sisterhood of the Traveling Pants 2, August 8 

    Based on Ann Brashares' best-selling series of novels, four girls-Tibby, Carmen, Bridget and Lena-continue

their journey into adulthood that began with The Sisterhod of the Traveling Pants three years ago. Now, these

lifelong friends embark on (登上) separate paths for their first year of college and the summer beyond. But

they remain in touch by sharing their experiences with each other with honesty and humor. They discover their

individual strengths, fears, talents and capacity for love. Through the choices they make, they come to value

more than the bond (情谊) they share and the power of their friendship.

1. Where does this passage most probably appear? [ ]

A. A newspaper

B. A magazine

C. A textbook

D. A story book

2. What does the underlined words mean? [ ]

A. Stepping on grandpa's feet

B. Following his grandpa's way

C. Putting on his grandpa's shoes

D. Hiding in his grandpa's shoes

3. Which of the following isn't advised to do in the summer vacation? [ ]

A. Throwing away the pencils

B. Don't use school bags

C. Hard work

D. Seeing a film or two

4. Which of the following statements is true? [ ]

A. Journey to the Centre of the Earth 3D will be on show on July 17.

B. The Sisterhood of Traveling Pants is oh show on August 18.

C. All these films have something to do with science.

D. It introduces only one hot film in August.

5. What is the best title of this passage? [ ]

A. Hot Summer Movies

B. Summer Vacation

C. Space chimps

D. Sit back and Enjoy

题型:判断题

()是使机车车辆转线的连接设备,12号道岔侧向允许通过速度为()。

题型:判断题

什么是再生纤维?请列举一种常见的再生纤维。

题型:判断题

项目生命周期包括( )阶段。

A.项目启动、项目开发、项目实施和项目收尾四个阶段
B.项目启动、项目计划、项目实施、项目收尾四个阶段
C.项目定义、项目开发、项目实施和项目收尾四个阶段
D.项目启动、项目计划、项目实施、项目控制、项目收尾五个阶段

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