问题
解答题
已知关于x的不等式 (
|
答案
∵(
)x-4>3-2x,1 3
∴34-x>3-2x,
∵y=3x是一个递增函数,
∴4-x>-2x,
∴x>-4.
已知关于x的不等式 (
|
∵(
)x-4>3-2x,1 3
∴34-x>3-2x,
∵y=3x是一个递增函数,
∴4-x>-2x,
∴x>-4.
选词填空。 | |
| |
Sam had a dog. Its name was Tod. It was very helpful, but it ate 1.______So he didn't like it. He wanted to 2.______ Tod. He tied Tod and put it in a small boat. He rowed (划) the boat to the 3.______of a big river. Just as he 4.______the poor animal into the river, the boat began to go down. 5.______the man and Tod fell into the river. Tod was able to swim, 6.______Sam couldn't. The dog bit ( 咬) the rope and broke it. It tried 7.______best to swim to Sam. The man was saved, so he was very 8.______to the dog, and he didn't want to kill the dog 9.______. From then on, he gave the dog as much 10.______ it wanted. |