第三部分:阅读理解（共20小题;每小题2分, 满分40分）
阅读下列短文，从每篇短文后所给各题的四个选项（A、B、C和D）中，选出最佳选项，并在答题卡上将该项涂黑。
Catherine Destivelle is a rock star. She loves rock, but she can’t sing or play the guitar! She is a rock climber and a big star in France and Italy. She is the most famous woman climber in the world because she often climbs without ropes. She climbs in many countries but most often in the French Alps near Chamonix, where she lives. She started climbing near her home in Paris when she was five. he French Alpine Club to learn more, but immediately she climbed better and more quickly than the older members of the club. She won her first competition in Italy in 1995.
Three years ago she found a new route up the Dru Mountain near Chamonix. The climb took eleven days and for four days the snow was so heavy that she could not move. Last year other climbers tried to follow the new Destivelle Route, but they failed. They are going to try again this year.
People always ask her about her climbing. She says, “I climb because I’m in love with mountains. I like touching the rock and reading the face of the rock. I like it a lot. I felt at home on the side of a mountain. I prepare well before I go, so I’m never worried.”
Catherine chooses new mountains from books—like buying from a shopping catalogue (目录)! “I see a nice mountain and I go to climb it!” Her next mountain is in Pakistan. She is going there next month. “It’s much bigger than the Dru, so it’s going to take longer to climb. An American climber, Jeff Lowe, is coming with me to help.”
51．Catherine Destivetle is called “a star” because ________.
A. she won a competition in 1995 B. she loves rocks
C. she’s a famous woman climber D. she found a new route up to the Dru Mountain
52．She had great trouble finding a new route up the Dru Mountain because ________.
A. she lost her way B. the climb took 11 days
C. she needed help from an American climber D. there was heavy snow
53．On the side of a mountain she feels ________.
A. worried B. easy and happy
C. like staying at home D. well
54．We can infer from the passage people often ask her “________”.
A. Why do you like climbing?
B. Are you in love with an American climber?
C. Do you enjoy reading books on mountains?
D. What do you do before you go climbing?
的阻值为2Ω，请回答下列问题：
后，电流表的示数为零，电压表的示数不为零；接下来，该同学用多用电表的电压档检查电路，把两个表笔分别接在
．
和
及
．
时，示数均为零；接在
图线，并回答该电池的电动势
V，内阻
Ω（均保留两位有效数字）。
1．4～1．6 V，
0．9～1．1 Ω
．
和
及
．
时，示数均为零；接在
，可知