An （）is a scientific test that is done to study what happens and to get new knowledge.

单项选择题He is a （）person，so whatever he does，he is always full of hope and sure of success，and he won’t give up without a fight.

A.brave
B.confident
C.realistic
D.reasonable

单项选择题Look，you can see many （）in the pool.And here is some （）for you to keep them.

A.fish；suggestion
B.fishes；advices
C.fish；advice
D.fishes；suggestions

单项选择题—John，do you like online games？—No.I never play online games.I think it’s a waste of time and （）.

A.enemy
B.energy
C.emperor
D.equator

单项选择题Great （）for football lovers—more than 50，000 soccer schools will be built in our country by the end of 2025.

A.news
B.message
C.situation
D.information

单项选择题—There is an MP5 on the desk，whose is this？—It can be my（），she bought one yesterday.

A.sister
B.sister’s
C.sisters’
D.sisters

单项选择题—Would you like some （）for dinner？—OK.

A.tomatos
B.tomato
C.tomatoes

单项选择题On April 24，Xie Wenjun raced to gold in the （）110-meter hurdles at the Asian Athletics Championships in Qatar.

A.man
B.men
C.men’s
D.mens’

单项选择题—Look at the clouds，so beautiful!—Wow，so many different （）horses，dogs，sheep.

A.sizes
B.senses
C.colors
D.shapes

单项选择题Steve Jobs was full of （）—always coming up with new ideas which led to great changes in society.

A.instruction
B.invitation
C.introduction
D.invention

单项选择题Computers are very useful．They can help us get much （）on the Internet．

A.games
B.information
C.courage
D.messages