19.The secretary dreamed of having some kind of software to organize her files ____________(intelligent).
19.The secretary dreamed of having some kind of software to organize her files ____________(intelligent).
19.The soldiers made a__________at the enemy. A: rush B: clash C: dash D: hurry
19.The soldiers made a__________at the enemy. A: rush B: clash C: dash D: hurry
19.The experts cal__that the markets in this area for these cell phones will expand by 200 percent in the next three years.
19.The experts cal__that the markets in this area for these cell phones will expand by 200 percent in the next three years.
【填空题】19//4= ,19%4= , -19//4= , -19%4=
【填空题】19//4= ,19%4= , -19//4= , -19%4=
某班学生年龄(单位:岁（）分布如下:18 17 19 18 19 20 18 19 19 18 19 18 19 18 17 21 18 1919 18 17 18 19 18 19 20 18 20 19 19 19 18 19 18 17 21 18 19 20 18 18 17 20 17 19 20 19 18 19 18要求:(1（）以学生年龄为分组标志编制分布数列（2）分别按向上和向下两种形式进行频数累计并列表说明。
某班学生年龄(单位:岁（）分布如下:18 17 19 18 19 20 18 19 19 18 19 18 19 18 17 21 18 1919 18 17 18 19 18 19 20 18 20 19 19 19 18 19 18 17 21 18 19 20 18 18 17 20 17 19 20 19 18 19 18要求:(1（）以学生年龄为分组标志编制分布数列（2）分别按向上和向下两种形式进行频数累计并列表说明。
AmongCovid-19 , 19 refers to _______. A: the year 2019 B: 19 kinds of viruses C: 19 persons D: 19 diseases
AmongCovid-19 , 19 refers to _______. A: the year 2019 B: 19 kinds of viruses C: 19 persons D: 19 diseases
19.the wheels of the old wagon are nearly ______ those of a modern car. a. twice the size of b. twice size of c. twice sizes of d. twice the sizes of A: twice the size of B: twice size of C: twice sizes of D: twice the sizes of
19.the wheels of the old wagon are nearly ______ those of a modern car. a. twice the size of b. twice size of c. twice sizes of d. twice the sizes of A: twice the size of B: twice size of C: twice sizes of D: twice the sizes of
19%4的值:_______;-19%-4的值：_________;-19%4的值：_________;19%-4的值：________
19%4的值:_______;-19%-4的值：_________;-19%4的值：_________;19%-4的值：________
在三线摆实验中，连续测三次周期，下列哪组数据不正确：。 A: 1'18"98 1'19"21 1'19"37 B: 1'19"34 1'19"79 1'20"10 C: 1'19"11 1'19"33 1'19"75 D: 1'18"56 1'19"27 1'19"65
在三线摆实验中，连续测三次周期，下列哪组数据不正确：。 A: 1'18"98 1'19"21 1'19"37 B: 1'19"34 1'19"79 1'20"10 C: 1'19"11 1'19"33 1'19"75 D: 1'18"56 1'19"27 1'19"65
人体的髋骨愈合为一个整体要在（）。 A: 19~20岁 B: 19~21岁 C: 19~23岁 D: 19~25岁
人体的髋骨愈合为一个整体要在（）。 A: 19~20岁 B: 19~21岁 C: 19~23岁 D: 19~25岁