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阅读短文后回答问题 I have many pen pals in many countries. Bill is my first pen pal .He is 13 years old. He is from Singapore. He lives with his grandparents .He has a big family. Reiko is a little girl. She is Japanese .She is only 10 years old, but she can speak French and English. Mike is  from Australia .He often talks to me on the Internet(互联网) .He likes basketball very much. His favorite basketball star is Michael Jordan. Sally lives in New York of the USA. She is my new pen pal. She is very kind .She has many pen pals in China. She likes writing to them. Gao Yu is also my pen pal .But he is a Chinese boy .He is in Beijing and he often calls me on weekends. We talk about something interesting in school. 小题1:How old is Bill? . 小题2:What other languages can Reiko speak? . 小题3:Where does Sally live? . 小题4:Where is Gao Yu from? . 小题5:What’s Mike’s favorite sport? .
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举一反三
【判断题】若对任意的 ,都有 ,则函数 的周期为 1. ( )
A.
正确
B.
错误
【简答题】上衣切展小测试2:
【简答题】若函数y=sin(π+x),y=cos(2π-x)都是减函数,则x的集合是(  ) A.{x|2kπ≤x≤2kπ+ π 2 ,k∈Z} B.{x|kπ≤x≤2kπ+ π 2 ,k∈Z} C.{x|2kπ- π 2 ≤x≤2kπ+ π 2 ,k∈Z} D.{x|2kπ+ π 2 ≤x≤2kπ+ 3 2 π ,k∈z}
【判断题】若对任意的 ,都有 ,则函数 的周期为 4 。( )
A.
正确
B.
错误
【判断题】稀释法药敏试验和纸片扩散实验通常用于检测微生物的最小抑制浓度。
A.
正确
B.
错误
【简答题】函数y=(a-1)x+b在R上是减函数,则a的取值范围是______.
【简答题】有下列几个命题: ①函数 y= 1 x+1 在(-∞,-1)∪(-1,+∞)上是减函数; ②已知f(x)在R上是增函数,若a+b>0,则有f(a)+f(b)>f(-a)+f(-b); ③已知函数y=f(x)是R上的奇函数,且当x≥0时, f(x)=x(1+ 3 x ) ,则当x<0时, f(x)=-x(1- 3 x ) ; ④已知定义在R上函数f(x)满足对?x,y∈R,f(x+y)=f(x)+f...
【判断题】若对任意的 ,都有 ,则函数 的周期为 1. ( )
A.
正确
B.
错误
【判断题】若对任意的 ,都有 ,则函数 的周期为 6 。( )
A.
正确
B.
错误
【单选题】张某拟设立一家有限责任公司,经营商品批发,下列企业名称合格的是
A.
天津666贸易有限公司
B.
天津大地商贸公司
C.
天津汇通商品贸易有限责任公司
D.
中国天津商品贸易国际发展有限责任公司
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