PVC通常表示（）。 A.房性期前收缩 B.室性期前收缩 C.室内差异性传导 D.室

Directions: Read the following passage, Answer the questions according to the

information given in the passage.

Secret Santas

On Christmas morning, Linda wakes up, and tries to imagine the wide-eyed surprise of children in another household as they unwrap the presents she carefully chose for them. Linda has never met the children, but that’s all part of the joy of giving as secret Santas, she says.

"It's an amazing feeling to buy gifts on an anonymous (匿名的) basis," says Linda.

"It brings a whole new meaning to the holidays."

Linda and Tony are an American couple living in Toronto, Canada, and Linda did charitable work as a member of the American Women's Club of Toronto. As the name suggests, members are U.S. citizens living in Toronto, who join together for fellowship and community service.

To find her "adopted" family, Linda goes to the local schools and requests a wish list for a family that's struggling to survive. Last year she helped a single mother with three children. The mother works as a cleaning lady in a nursing home.

"The list is always heartbreaking. They have an opportunity to ask for anything and do just the opposite, asking for basic clothes or simple toys," she says. "We always buy the kids a new winter coat, hats, and gloves." She also buys gifts for the parents.

Last year Linda asked the mother for a second wish list--one that didn't include the basics. "Every child should have a Christmas that sticks with them for a lifetime." She purchased iPods for the two older children and a video game system for the youngest."I have learned a very valuable lesson in all of this," says Linda. "Pay attention to what's going on in your own backyard--no matter where you live."

The joy of giving as secret Santas is much sweeter when the gift is anonymous.

小题1:What reaction does Linda imagine the children will have?

(No more than 5 words)                                       (2 marks)

小题2:Why did Linda join the American Women's Club of Toronto?

(No more than 10 words)                                      (2 marks)

小题3:Why did Linda ask for a second wish list?

(No more than 15 words)                                     (3 marks)

小题4:What kind of people does "secret Santas" in the passage refer to?

(No more than 12 words)                                      (3 marks)

如果啤酒液中的（）含量高，会使啤酒粘度提高，出现过滤困难。

塑料甲冠不可用于（）。

A.暂时性修复体

B.诊断性修复体

C.修复前牙过小牙

D.修复前牙切角缺损

E.修复磨牙外形

增强扫描动脉期，多数转移性肝癌的强化程度（）

A.比原发性肝癌低

B.明显高于肝脏

C.比原发性肝癌高

D.与原发性肝癌相仿

E.明显强化

施工单位主要负责人依法对本单位的（）负责。

A、安全生产工作按分工

B、安全生产工作间接

C、安全生产工作连带

D、安全生产工作全面