A.Never eat peanut butter.
B.Never eat chicken and eggs.
C.Never eat food unless they’re cooked.
D.Wash hands before dinner.
8.Why did the scientists at Clemson University make the experiment?
A.Because they wanted to see if Salmonella cells can grow on such kind of food.
B.Because they wanted to
see whether the 5-second rule is correct or not.
C.Because they wanted to find out the best food among the three.
D.Because they wanted to see whether bacteria can make one sick or not.
二、任务型读写
阅读下面短文,根据所读内容在表格中的空白处填入恰当的单词。注意:每个空格只填一个单词。
Solar energy,as the name suggests,can be defined as the energy received from the sun.
One of the biggest advantages of solar energy is that it is a renewable source of energy.It can be produced as long as the sun lasts,which is for next millions of years.Therefore,solar energy can be truly called a long-lasting source of energy.Solar cells are easy to install and can be installed on rooftops,hence no extra space needed.Solar energy can be produced in any part of the world,at any place where abundant sunlight is available.
One of the most important environmental advantages of solar energy is that it is a non-polluting source of energy as there are no emissions of carbon dioxide or other gases during the production of electricity.Owing to the above mentioned reasons,solar energy does not pose any threat to the environment and hence,is also known as a clean source of energy.
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