题目

Parents can help their seventh and eighth grade students stand out in and out of their English classroom by introducing them to newspapers. Newspapers not only offer information on current events, but they can also be used to test your child's knowledge of grammar, vocabulary, and more. Who, What, Where, When, Why, and How Have your child read the first couple of paragraphs of a news story. Ask them to write down all of the important facts, such as who, what, where, when, why and how. This helps parents to see if their children comprehend the basic facts and information they read. Gr将一个导体与电阻为6Ω的导体串联后，其总电阻是9Ω．若将二者并联，则总电阻是（ ）A．3ΩB．15ΩC．2ΩD．1Ω