人类口腔正常菌群中的主要致龋菌不包括
A.内氏放线菌B.粘性放线菌C.变形链球菌D.乳杆菌E.梭形菌
参考答案:E
Read and judge. 读短文,判断下列句子正(T)误 ( F) 。
Today I go to my grandma's birthday party. It is fine and warm. I wear my nice skirt. It's new. My
grandma wears new clothes, too. My aunt and uncle come to her house, too. My aunt wears a yellow coat.
It is beautiful. My uncle wears a gray suit. We eat and talk all the morning. Everyone is happy. In the afternoon,
it's windy and cold. I catch a cold. What a pity!
( )1. Today is my grandpa's birthday.
( )2. My grandma and I wear new clothes.
( )3. It is fine all the day.
( )4. We eat and talk a lot.
( )5. In the afternoon, I am happy, too.
1959年,美国国家展览会在莫斯科举办。对于榨汁机和洗碗机等展品,赫鲁晓夫表示工人阶级决不会购买这些无用的小器具,当场引起了美国副总统尼克松的反对。这反映了当时[ ]
A.美苏冷战的重点从军事领域转向经济领域
B.美国霸主地位动摇,急需打开苏联市场
C.苏联轻工业发达,不需要进口这些器具
D.经济文化交流没有改变两国意识形态的对立