A story tells that a senior villager led some other villagers carrying salt day and night to a town in order to
trade rice as food the winter. One night they camped in a wilderness with a starry sky above. The senior
villager, obeying the tradition passed down from forefathers, took out three blocks of salt and threw them into
the campfire, probably to predict the changes of weather in the mountains.
     All eagerly waited for the old man's" weather report":if the salt in the fire produced crackling sound, they
would have good weather in store；if no sound was produced, it then meant the good weather would soon end
and a storm would come at any moment.
     The senior villager looked serious. The salt in the campfire made no sound at all. Convinced by this bad
sign, he urged (催促) the whole team to set out immediately after daybreak. A young man in the group,
however, insisted that they should not start in such a hurry, considering it superstitious to" forecast weather by
using salt.
     It was not until the next afternoon that the young man caught up on the wisdom of the old man when the
weather suddenly changed, with cold winds blowing and a snowstorm raging. In fact, the method used by the
clan head could be well explained by modem science:whether or not salt produces sound in campfire depends
on air humidity (湿度).That is to say, when a storm approaches, due to high humidity, the dampened salt
blocks will not produce any sound in fire.

1.The senior villager predicted the changes of the weather _____ while camping in a wilderness that night.

A. by taking out salt
B. by burning salt in fire
C. in a superstitious way
D. depending on his wisdom

2. "The weather report" they got that night _____.

A. had a bad sign
B. gave wrong information
C. was superstitious at that time
D. was scientific according to modem science

3. After reading the passage, we can know _____.

A. the lower humidity is, the bigger sound salt will produce in fire
B.the higher humidity is, the bigger sound salt will produce in fire
C. dampened salt blocks will result in winds and storms
D. the young man never wanted to understand the old man

4. From the passage, it can be concluded that _____.

A. old people are always right
B. old people are wiser than the young
C. young people shouldn't regard old ideas as useless or out of date sometimes
D. young people usually have different opinions from the old