胎盘的组成是 A．平滑绒毛膜、包蜕膜、羊膜 B．叶状绒毛膜、底蜕膜、羊膜 C．叶状绒

将下列河流与其特征用线连接起来．

注入北冰洋的河流                    额尔齐斯河

我国年径流量最大的河流              塔里木河

含沙量最大的河流                    长江

最长的内流河                        黄河

注入印度洋的河流                    雅鲁藏布江．

(A)

Directions: Translate the following sentences into English.

要是我能看到四个现代化实现该有多好啊!

Melissa Poe was 9 years old when she began a campaign for a cleaner environment by writing a letter to the then President Bush. Through her on efforts, her letter was reproduced on over 250 donated billboards (广告牌)across the country.

The response to her request for help was so huge that Poe established Kids For A Cleaner Environment (Kids F.A.C.E.) in 1989. There are now 300,000 members of Kids F.A.C.E. worldwide and it is the world’s largest youth environmental organization.

Poe has also asked the National Park Service to carry out a “Children’s Forest” project in every national park. In 1992, she was invited one of only six children in the world to speak at the Earth Summit in Brazil as part of the Voices of the future Program. In 1993, she was given a Caring Award for her efforts by the Caring Institute.

Since the organization started, Kids F.A.C.E. members have distributed and planted over 1 million trees! Ongoing tree-planting projects include Kids’ Yards — the creation of backyard wildlife habitats (栖息地) and now Kids F.A.C.E. is involved in the exciting Odyssey, which is a great way to start helping.

“We try to tell kids that it’s not OK to be lazy,” she explains, “You need to start being a response, environmentally friendly person now, right now, before you become a resource-sucking adult.”

72. Kids F.A.C.E. is __________.

A. a program to help students with writing

B. a project of litter recycling

C. a campaign launched by President Bush

D. a club of environmental protection

73. What can we learn about Poe?

A. She was awarded a prize in Brazil.

B. She donated billboards across the country.

C. She got positive responses for her efforts.

D. She joined the National Park Service.

74. Kid’s Yards is ____________.

A. established in national park

B. started to protect wildlife

C. a wildlife-raising project

D. an environment park for kids

75. Which of the following can be inferred from the text?

A. Adults are resources –sucking people.

B. Poe sought help from a youth organization

C. Kids F.A.C.E. members are from the U.S.

D. Kids are urged to save natural resources.

随着混凝土的不断浇入，应及时提拔拆除导管，使导管埋入混凝土的深度保持在( )m。

A．2～4

B．2～6

C．3～6

D．4～8

东交民巷教堂又称（），1901年由法国人建造，为（）式建筑。