(单选题) To maintain clarity and ________, we leave all complicated theories aside.(本题2.5分)

A. shortness

B. swiftness

C. simplicity

D. complexity

(单选题) We always ______ all sorts of warning signals about our health, leaving re

(单选题) The notice on the lobby reminds all the guests to make sure that their ___

(单选题) I stayed in the sitting room and _____ my friends all the time.( )(本题2.5分)

(单选题) Infant ________ rate is the number of infants dying before reaching one ye

(单选题) As days _________, a deep friendship began to develop between them. (本题2.5

(单选题) My grandma was so _____of flying that she always preferred to take a train

(单选题) The newcomers have to undergo one month's ________ training before they ta

(单选题) This method is ______ which saves us half of the time and effort.(本题2.0分)A

(单选题) The students in our school are ____ those in that school.( )(本题2.0分)A. two

(单选题) September is the _______ month of the year? ( )(本题3.0分)A. nineB. ninthC. t