注册会议由( )名注册委员会委员参加。A．2 B．3 C．5 D．7
题型：单项选择题
问题：
注册会议由( )名注册委员会委员参加。
A．2
B．3
C．5
D．7
题型：单项选择题
A long road leads through the woods to Don Robinson’s unfinished house. Wearing dirty sneakers and a shirt with holes, Don Robinson is an 81-year-old Missouri businessman. Although he’s rich, he didn’t use his money to buy himself a grand home. Instead, he used it to buy wild land.
Robinson has decided to donate 843 acres of his own personal wilderness to the Department of Natural Resources after his death, which can then be used to create a new state park. His generous donation is the same size as New York City’s Central Park. It is said that it’s the largest land donation to happen in the last 25 years.
How did he come up with this idea? For Robinson, the idea of donation came from his respect for the land and the environment. He doesn’t have children to pass it onto. He hoped that someone would make full use of it, or the land would probably turn into wasteland. A green park filled with trees can at least help deal with global warming, in addition to producing fresh air.
Robinson has lived here in a small wooden house since 1964．One room holds his bed, a few chairs and a desk. He said he didn’t care how much his donation was worth. Tom Pounders who used to work for Robinson said, "He doesn’t think material objects are important.” He also recalled that Robinson once repaired a broken tennis shoe with a spare tire.
Robinson has just one request for the new park that will be established after his death. He’d like it to be named the Don Robinson State Park. "There’s a lot of Robinsons, but only one me. It would be nice if people remembered to use my full name when walking through the park," he said.
小题1:In paragraph 2, the underlined word “wilderness” refers to _______.
A．wild animals
B．wild land
C．wild plants
D．wild wounds小题2:Don Robinson has decided to donate _____ to the Department of Natural Resources after his death.
A．a green park
B．a big wooden house
C．843 acres of land
D．all his money小题3:According to the passage, which of the following statements about is TRUE?
A．Don Robinson paid much attention to how much his donation was worth.
B．New York City’s Central Park was built with Don Robinson’s help.
C．Don Robinson had many children and lived with them.
D．The idea of donation came from Robinson’s respect for the land and the environment.小题4:Which of the following words can be used to describe Don Robinson?
A．rich, generous and simple
B．rich, mean and lonely 
C．simple, lonely and cruel
D．rich, simple and mean
与水平轨道间的动摩擦因数μ＝0.5．整个装置处于静止状态，现将弹簧解除锁定，小物块被弹出，恰能到达圆弧轨道的最高点A，g取10m/s2．求：