题干

下图为膝跳反射示意图,下列有关膝跳反射过程的叙述中,正确的是(  )

A:该反射弧为三元反射弧

B:②为反射中枢,①神经元兴奋会引起屈肌收缩

C:抑制性中间神经元兴奋会引起屈肌收缩

D:若刺激①处会引起伸肌收缩,这种现象属于反射

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答案(点此获取答案解析)

B

同类题2

    The right name is important in the business world. All you have to do is think of the names for some of the products you buy every day and you'll agree that the name and the product are connected in the everyone's mind.
    In many countries, successful trade or brand names are protected by law. This is so that other companies cannot make a product and, in fact, be buying something different. Businesses register a company or a product name with the government. In fact, more than 1,000 product and company names are registered every hour. Many companies spend a lot of money to find the right name for their products. A good example of this is. In the car industry. Some successful names for cars have powerful associations (联系).The Ford Mustang and the Jaguar are only two examples of choosing the names of animals that are fast and strong.
    When a U. S company decides to sell its product in another country, it has to make sure that the product name translates properly. When Coca-Cola introduced its soft drink to China, it looked for the right name. It wanted a name that would do two things. One was to present its image(形象)in Chinese and the second was to be close to its first brand name—Coke. It took some efforts before finding the right word —which sounds similar and translates as “happiness in the mouth”. Asian company names are not new to the United States. The brand names of Samsung and Sony have been successful. Finding the right brand name is a big business. Asian companies that sell to foreign markets pay to find a name that will connect with its customers. There are even naming companies that specialize in inventing product names. These companies can charge (要价)up to $100,000 a word for their creations. But it’s worth it. Successful companies know how important the right brand names are for their development.