内容正文:
黄金卷05
一、阅读单选(15小题,每小题2分,共30分)
A
Science Facts
Enjoy our fun science facts for kids in grades four to nine. Learn interesting earth facts, amazing chemistry facts, cool space facts, funny facts about animals and more.
Contents
Animal Facts........................ Pl-10
Human Body Facts........... P11-22
Technology Facts.............. P23-30
Food Facts.......................... P31-43
Water Facts.........................P44-50
Physics Facts.............................. P51-65
Weather Facts............................. P66-77
Space Facts................................. P78-83
Chemistry Facts........................P84-91
Sound Facts.............................. P92-100
• I •
Fact 1
Researchers have found the key to communicating with cats. They say cats will appear friendlier to humans who use eye-narrowing (眯起眼睛的) facial expressions.
• 3 •
Fact 2
Sharks might have the healthiest teeth among all animals. Sharks have a fluoride (氟化物) coating on their teeth, and it keeps the teeth from becoming bad. That’s why most of our toothpaste has fluoride in it.
• 8 •
Fact 3
Earwax (耳垢) is made by the body to protect the ears. It prevents dirty things from getting farther into the ear. Earwax normally comes out of your ear naturally, so it’s not a good idea to try to take it out yourself unless it is causing health problems.
• ? •
Fact 4
When you play back the voice messages that you record, you might find that they sound different from your speaking voice. That is because when we speak, we hear our own voice through our bones in our ears, while our recorded voice passes through the air instead.
• 98 •
根据材料内容选择最佳答案。
1.What do Fact 1 and Fact 2 have in common?A.They talk about friendly animals. B.They mention humans’ influence.
C.They both belong to Animal Facts. D.They explain chemistry knowledge.
2.On which page may we read about Fact 3?
A.P15. B.P35. C.P63. D.P87.
3.What does our own voice we hear travel through when we’re speaking?
A.The air. B.The bones in ears.