题目内容
（请给出正确答案）
How do scientists estimate the age of language？
A．By studying animals" evolution.
B．By studying human genes.
C．By using mathematical tools.
D．By using the age of living species.
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（由简答题聘请的专业题库老师提供的解答）
更多“How do scientists estimate the age of language？A．By studying animals" evolution.B．By study”相关的问题
Why does the professor mention the Moons mantle？
A．To explain how scientists are able to estimate the age of meteor impacts
B．To indicate what part of the Moon could provide key evidence about the Moon"s composition
C．To explain how scientists know that meteors penetrate the Moon"s crust
D．To point out an obvious difference between the Moon and Earth
How did the scientists do the test？
A．Very rich breakfasts.
B．Different foods or sometimes none (没有一个).
C．No breakfast at all.
以下程序的输出是【 】。 main() { char strl[]]="How do you do",*p1=strl； strcpy(strl+strlen(strl)/2,"es she")； printf("%s\n",p1)； }
Do scientists know how many cryptic species exist？
A．Not yet.
B．Yes, they do.
C．They will know the answer in another one or two years.
D．They will never know the answer.
以下程序的输出是【 】。 main() { char str1[]="How do you do",*pl=str1; strcpy(str1+strlen(str1)/2,"es she"); intf("%s\n",p1);
以下程序的输出是【 】。 main() { char str1[]="How do you do",*p1=str1; strcpy(str1+strlen(str1)/2,"es she"); printf("%s\n",p1); }
How do the scientists measure the pitch？
A．According to the movement and vibrations of hot gasses
B．The trade winds blow on Earth
C．The rivers
D．The sound travel through the space
以下程序的输出是【 】。 main() { char str1[]=How do you do"，*p=strl; strcpy(str1+strlen(str1)\2"es she"); pfinff("%s\n",p1); }
Scientists think that ______ .
A．they may get the result of how hormones work
B．they should do more studies on male hormones
C．they may get hormones to serve people
D．nearly half of the female patients have hormone problem
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