题目内容：

On a sunny day, Linda and Jack were to try the new boat on the river．Linda jumped out of bed excitedly, got dressed quickly and woke up her brother Jack．

After ____ Linda and Jack arrived at the riverbank and ____ the new blue boat waiting for them．They got into the boat and packed their picnic under the ____．Linda started the engine and ____ they went into the wide, brown and unknown ____ of the river．

Suddenly, they found the boat sounded ____ round a bend in the river．On the distant sandbank they saw a long dark creature ____ in the sun. It opened one eye at them and then suddenly disappeared into the ____．

“What was that?” shouted Jack．

“It looked like a crocodile to me!” said Linda．“We’d better be ____．”Just as they came round the next ____, the engine ____ and came to a stop．Linda ____ to start the engine again． But it wouldn’t start. They were ____．

“Let’s get the wooden oars,” said Jack． “Maybe we can  ____ the boat free．

They tried but failed．

“We’re stuck on a sandbank,” said Linda. “We’ll just have to sit here having our ____ and wait for the water to ____．”

“It’s boring!” said Jack．

Suddenly, they felt the boat move .It moved slowly off the sandbank. And the engine started again. Just at the same time they noticed a black ________ by the boatside and in no time it disappeared in the brown water ahead.

They ________ their journey down the river. It was so exciting .

At noon they saw a small river _________ the main river. It wasn’t on the map . “Let’s ________   there!” said Linda.

The boat turned and went into the smaller channel .On both sides grew thick unknown trees.

1.A. meal    B. lunch    C. dinner    D. breakfast

2.A. realized    B. discovered    C. found    D. thought

3.A. sun    B. seat    C. fire    D. bank

4.A. away    B. around    C. on    D. up

5.A. water    B. flood    C. flow    D. position

6.A. smoothly    B. normally    C. badly    D. hardly

7.A. walking    B. laying    C. lying    D. sleeping

8.A. sands    B. woods    C. air    D. water

9.A. serious    B. brave    C. careful    D. slow

10.A. bend    B. river    C. animal    D. boat

11.A. put out    B. broke down    C. gave in    D. got off

12.A. planned    B. managed    C. tried    D. intended

13.A. stuck    B. delayed    C. stopped    D. kept

14.A. expect    B. give    C. use    D. push

15.A. rest    B. picnic    C. sightseeing    D. fun

16.A. fall    B. come    C. rise    D. run

17.A. snake    B. figure    C. shade    D. fish

18.A. gave up    B. started    C. ended    D. went on

19.A. leading  off    B. separating from    C. dividing into    D. leaving for

20.A. observe    B. watch    C. explore    D. play