23．A．whenever B．whether C．though D．since
24．A．stays B．changes C．falls D．increases
25．A．helpful B．equal C．harmful D．familiar
26．A．where B．that C．why D．because
27．A．lucky B．serious C．cheerful D．sad
28．A．busy B．free C．lazy D．empty
29．A．river B．gap C．channel D．bridge
30．A．come up with B．have contact with C．look down upon D．look up to
31．A．means B．explains C．becomes D．matches
32．A．peace B．silence C．happiness D．disease
33．A．Besides B．Nevertheless C．However D．Yet
34．A．pay B．value C．rate D．price
35．A．worker B．farmer C．writer D．manager
36．A．manages B．controls C．operates on D．deals with
37．A．stand B．grow C．rise D．sleep
38．A．doubt B．actions C．notes D．words
39．A．come to B．turn to C．stick to D．point to
40．A．dance B．play C．speak D．work
Once upon a time, two young men were spending some time in the country. One day, while taking a walk together, they crossed a large field. 41． (sudden) a bull (公牛) appeared and began to chase (追逐) them. They were very 42． (frighten) and began to run, but the bull kept 43． (run) after them. Finally, one of the men climbed up a tree and 44． other one jumped into a hole. Soon, however, the man 45． had jumped into the hole came out again.
Immediately the bull chased him back into the hole again. This 46． (go) on for five or six times. Finally, the man in the tree came up 47． an idea and shouted to his friend, "Stay in the hole for a while or this bull 48． (keep) us here all day！" 49．he jumped back into the hole again, he said，"It's easy for you to say, 50． there is a bear in this hole."
Jimmy is one of my closely friends. Two months ago, his mother bought a computer to him as a birthday present. She hoped Jim will study hard with the help of the computer. To his surprise, Jimmy just wasted plenty of time play computer games every day. Now she regrets buying the computer. As matter of fact, a computer can do a lot of everyday jobs for us. It is wide used in factories, hospitals, banks and so on. Many computers scientists are now trying to make the computer to "think" like a man. In my opinion, the key is what we should use it wisely.
I'm glad to receive your e-mail and happy to know that you are interested in learning Chinese.