【单选题】You are performing two sums, the first is a sum of two scalar variables and the second is a matrix sum of a pair of two— dimensional arrays—size 1000 by 1000. What speedup is achieved when the calcula...
【简答题】At the age of four , our kids began to help us with the housework. They helped __ 1 __ their pets and clean the house. Now Tate can make her bed , __ 2 __ her clothes and set ( 布置 )the table. Last wee...
【简答题】Deborah Sampson was born in Massachusetts , U S in 1760. She was the fifth oldest of the seven children in her family. The family was so poor that the mother sent the kids off to live with friends and...
【单选题】In a paragraph that has the following topic and body, which of the following is a better conclusion. Topic: The best time to take up piano lessons is between ages 4 and 10. Body: At this age, kids mem...
A.
All in all, if kids are interested in piano, parents should encourage them to take up piano lessons at an early age.
B.
In conclusion, next Lang Lang might be your kid!
C.
By the time they enter high school, they can no longer concentrate on piano lessons.