关于牙源性感染的概念，错误的是（） A.病原菌可通过牙周组织进入体内 B.病原菌可通 发布时间：2017-05-29 22:37 │ 来源：www.tikuol.com 题型：单项选择题 A1/A2型题 问题： 关于牙源性感染的概念，错误的是（）A.病原菌可通过牙周组织进入体内B.病原菌可通过病灶牙根尖进入体内C.感染可向颌面间隙扩散D.牙源性感染儿童更多见E.多为混合性感染
题型：单项选择题 A1/A2型题 完形填空。 A traveler came out of the airport. There were a lot of 1 . He asked every taxi-driver's name. Then he took the third one. It 2 5 dollars to go from the airport to the hotel. " 3 does it take to hire (雇请) you for the whole day?" The man asked. "100 dollars," said the taxi driver. This was very 4 , but the man agreed. Then the taxi-driver showed him all the parks and museums in the city. In the evening they went 5 to the hotel. The traveler gave the taxi-driver 100 dollars and said, "What about tomorrow?" The taxi-driver 6 the man and said, "Tomorrow? That will be 7 100 dollars." But the man said it was OK. The taxi-driver was very 8 to be getting moremoney. The next evening, after taking the traveler to visit the same parks and museums, the taxi-driver 9 another 100 dollars, he felt guilty (有罪的) because 100 dollars a day was a lot of money. "Soyou're from New York." said the taxi-driver. "I have a 10 in New York. Her name is Susan. Doyou know her?" "Sure. She gave me 200 dollars to give you!". ( )1. A. trains ( )2. A. cost ( )3. A. How many ( )4. A. cheap ( )5. A. ahead ( )6. A. looked at( )7. A. the other( )8. A. angry ( )9. A. received ( )10. A. brother B. trucks B. paid B. How long B. low B. back B. looked after B. another B. unhappy B. gave B. son C. taxis C. spent C. How much C. dear C. across C. looked forC. other C. pleased C. borrowed C. sister 查看答案
题型：单项选择题 A1/A2型题 有如下定义： Class MA{ int value； public： MA(int n＝0)：value(n){} }； MA*ta，tb； 其中MA类的对象名标识符是______。 查看答案