问题
单项选择题 A1/A2型题
唾液维持口腔PH是由于唾液的()。
A.消化作用
B.清洁作用
C.缓冲作用
D.保护作用
E.稀释作用
答案
参考答案:C
唾液维持口腔PH是由于唾液的()。
A.消化作用
B.清洁作用
C.缓冲作用
D.保护作用
E.稀释作用
参考答案:C
用方框中所给单词的适当形式填空,使短文完整正确。(每个单词仅限一次)
As China is becoming better and better, many foreign students come to China learning something to build their own countries. 25-year-old Monthero is one of them . Monthero comes 小题1: Benin in West Africa. He is studying小题2: at Beijing Language and Culture University. “I thank Chinese小题3: a lot since they would help me practice Chinese whenever I asked them, ”Monthero said. He added that his Chinese teachers were also very小题4: . He wanted to learn more than just the language. He also wanted to study Chinese technology so that he could help小题5: water problems back home in Cotonou.“To learn小题6: to deal with water pollution is my goal, ”he said, “China is developing quickly in technology and science. ” According to Monthero, water in Cotonou and many other African cities is小题7: polluted. Monthero’s love for China grew after the Beijing Olympic Games. He小题8: a ticket from a friend and went to watch a wrestling match. “It was my小题9: time to China, ” he said. “I felt so good and I wanted to learn in China.” Like Monthero, many other students from different countries also want to sudy hard and then return to their countries to build them better with小题10: they have learned in China. |