题目内容
She suggested to Tom that he ______ the problem another way and his expression suggested that he______.
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----Do you often get online?----Yes. I_______ lots of time on it. It’s a good way to kill time.
What you said just now ____________me of that American professor.
You feel tired and you have no energy. You can’t breathe out of your nose and your throat hurts. Don’t be afraid ---you have probably just got a 1 . Every year, many kids experience this sick feeling. Some kids have up to eight colds every year. So, what 2 is a cold? Well, a cold is an infection(传染病). It affects your nose, ears and throat and makes you feel sick and weak. It’s very 3to catch a cold. When someone sneezes or coughs near you, bacteria(细菌) travel through the air and 4 your body and then make you sick. Also, if you touch your nose or eyes after touching something that has bacteria on it, 5 a door or your desk at school, you can get sick. Some of the symptoms(症状) of a cold 6 a fever, a sore throat and a cough. If you sneeze, or if your nose is runny and your 7 are watery, you’ve probably got a cold. Most people who have got a cold feel very tired and don’t have much energy to do anything. A cold is not a pleasant thing to 8 . However, there are some things you can do to feel better. You should have hot drinks 9 you’ve got a sore throat and cough. You should eat healthy foods and get a lot of rest so your body can be strong enough to fight your cold. If you’ve got a fever, or if you aren’t feeling better within a few days, you should visit your doctor and take some medicine. A cold can be frustrating, 10 just remember that there are many things you can do to feel better and get stronger. Take care of your body and stay healthy.
通过刚体上O点的三根相互垂直的坐标轴，如果满足：JXY = JZX =0，JXY = JYZ =0，则OX，OY，OZ一定是O点的三根惯性主轴
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