题目内容：

    It's a hot summer night. Rachel, "Grandma says quietly. "Get up. I have something to show you. Come with me. "Then hand in hand, they walk out of the house.

Today, Rachel and her parents drove two hours from New York City to send her big sister, Claire, to sleep away camp（野营）. Then they drove another four hours to Grandma's house in this quiet countryside.

Outside, it is dark. Grandma turns on a flashlight（手电筒）and starts walking.

"Where are we going? "Rachel asks, a little worried.

"You'll see, says Grandma. Then they walk to the forest.

Rachel sees some yellow lights and asks," What are they?"

"Fireflies（萤火）,"says Grandma.

They follow the lights. Then, suddenly, they arrive at a clearing（林中空地）, and Grandma turns off her flashlight. Fireflies are everywhere. The forest shimmers as if it's full of stars.

"They' re talking to one another," Grandma says. "They talk with light."

"What are they saying? "Rachel asks.

"I really don't know," Grandma says. "It's a secret language. Spend enough time with them, and maybe you'll find it out."

For a long while, Rachel watches the lights. She imagines（想象）she and her sister are two of the fireflies. They are telling each other secrets.

Walking back to Grandma's house, Rachel isn't sleepy at all. "Grandma" Rachel asks.

"Yes?"

"Can we do this tomorrow too? "

Grandma gives Rachel a big smile.

1.Claire doesn't go to Grandma's house because she ______ .

A.gets up too late B.hates such a long trip

C.is busy with her homework D.is at a summer camp

2.Grandma turns off her flashlight when ______ .

A.she sees Rachel B.she leaves her house

C.she gets to a clearing D.she walks into the forest

3.The underlined word "shimmers" means" _______ "in Chinese.

A.闪烁 B.燃烧 C.颤动 D.起伏

4.Which of the following is TRUE according to the passage?

A.Rachel had a really scary night.

B.Rachel understood the language of fireflies

C.Rachel fell in love with the forest with fireflies.

D.Rachel's grandma taught her science about fireflies.