a good insulator(绝缘体) , rubber is often used in cables.A. Having beenB. To beC. BeD. Bei

资讯推荐

• he is, he seldom shows his precious coins to others.A. Coin-collector as 　B. As a coin-co
• The film is very interesting. students have seen it.A. A plenty ofB. Many ofC. A great ma
• They when they heard him confess his fault.A. had been surprisingB. were surprisingC. we
• Our hometown is quite different from before.A. that is wasB. what it wasC. which it wasD.
• If you get in a foreign city, you’d better stay where you are and wait for your friends A.
• It is generally considered unwise to give a child he or she wants.A. howeverB. whatever C
• Kunar can take his car apart and put it back together again. I certainly wish he me how.A
• I , but I was prevent by the heavy rain.A. had meant comingB. had meant to comeC. meant t
• He entered the room, coat covered with snow.A. whoseB. hisC. itsD. it’s
• I’ll never forget the holiday we spent together.A. WhenB. howC. in whichD. that
• The suit over60 dollars.A. had costedB. costedC. is costedD. cost
• She was just about to explain she hadn't passed her maths test chiefly out of carelessnes
• If no one the phone at home, ring me at work.A. returnsB. repliesC. answersD. receives
• Speech is heard when it is given in a clear voice just slightly louder than normal.A. ha
• Seeing the sun above the surface of the sea we burst out a shout of joy.A. to riseB. to r
• The news sounds .A. EncouragingB. encouragedC. encourageD. to encourage
• on the portrait, mother was deep in thought.A. Fixed her eyesB. Her eyes are fixedC. Her
• As she the newspaper, Granny asleep.A. read ; was falling 　B. was reading; fellC. was r
• I’m not going to help you steal a can, what do you ?A. call meB. think meC. take me forD.
• They waited and waited. they had been looking forward to.A. Then the hour cameB. The hou
• -----Haven’t you heard the news? -----What news?　　 ----- Some of the workers are while ot
• No race war is worse than inside single family.A. itB. thatC. oneD. war
• The students are young people between the age of sixteen and twenty.A. mostB. almostC. mo
• Dinner’ll be ready in a few minutes. You’d better .A. washB. wash himselfC. get washedD. w
• It may rain, but I shall go out .A. somehowB. anyhowC. somewhatD. anywhere
• She is out on Sundays.A. almostB. mostlyC. mostD. the most
• Not until Mr. Smith came to China what kind of a country she is from.A. Didn’t he knowB. H
• So badly in the accident that he was sent to a hospital.A. did he hurtB. he was hurtC. wa
• about the universe up till now.A. So little had me knownB. Only a little do we knowC. Ve
• I’d rather he tomorrow afternoon.A. will comeB. comesC. comingD. came