阅读理解。
Jess really felt very happy. When he arrived at his seat in the classroom that morning, he found an
invitation (请柬) on his desk. It was from several of his classmates asking him to join them on a camping trip.
This was the first time he was asked to join in an out-of-school activity. Why were they asking him now?
Nobody seemed to like him. In fact, he had been so lonely that he drowned his feeling with food. As a result,
he had put on a lot of weight, and this gave the kids something more to make fun of him.
Cindy, who was standing near Jess when he read the invitation, went out quickly to tell the others that the
trick (恶作剧) had worked. Everyone was pleased that Jess thought that was true. But there was no camping
trip. The whole thing was made up.
At first, Cindy thought it was fun. But later, when Jess told her that he was going to buy a sleeping bag
with his savings (积蓄), Cindy had a second idea. She knew that Jess's family had little money, and she hated
to see him spend his savings on something he would never use. Cindy also hated to tell Jess the truth. Her
close friends would be angry with her. What could she do now?
1. The sentence "…he drowned his feeling with food" means "______ ".
A. he ate a lot to make himself feel less lonely
B. he asked for a lot of food from his classmates
C. he brought his food to his classmates
D. he had a lot of food to put on weight
2. What would happen if Cindy told Jess the truth?
A. Jess would go on the camping trip himself.
B. Jess's family would be angry with Cindy.
C. Cindy might have trouble with her friends.
D. Jess would be thankful to his classmates.
3. If Jess really bought a sleeping bag, _______.
A. everyone else would also buy one
B. it would be the best in the class
C. Cindy would pay for it
D. He would have it for no use
4. From the story we can guess _______.
A. everybody would go camping in the class
B. Jess had few friends in the class
C. Cindy was Jess's best friend I the class
D. Jess joined in many out-of-school activities
5. Choose the best title for this passage.
A. Jess and His School
B. Jess and His Friends
C. An Invitation for Jess
D. Jess and His Camping Tip
，M正、N负 
，M正、N负
，所以磁感强度为
，电子所受洛伦兹力向下，M带负电，N带正电，C对；