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【单选题】
一名外国游客到北京旅游，他要么上午出去游玩，下午在旅馆休息；要么上午休息，下午出去游玩，而下雨天他只能一天都呆在屋里。期间，不下雨的天数是12天，他上午呆在旅馆的天数为8天，下午呆在旅馆的天数为12天，他在北京共呆了（ ）。A.
16天
B.
20天
C.
22天
D.
24天
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反馈参考答案：
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【单选题】how many children were there in an irish family on average in the 1950s and 1960s?
A.
Around 5.
B.
More than 8.
C.
One.
D.
2 or 3.
【单选题】在 732K 时反应 NH 4 Cl(s) = NH 3 (g) + HCl(g) 的 为－ 20.8kJ . mol -1 ， 为 154kJ · mol -1 ，则反应的 为
A.
239J·K-1·mol-1
B.
0.239J·K-1·mol-1
C.
182J·K-1·mol-1
D.
0.182J·K-1·mol-1
【简答题】on average children have ed most of the distinctive sounds of their first language before they are ________years old.
【简答题】Passage Two In the past, American families tended to be quite large. Parents raising five or more children were common. Over the years, the size of the family has decreased. One reason for this is an ...
【单选题】In fact a Ghanaian woman has on an average ______ children.
A.
six or more
B.
seven
C.
six
D.
five
【单选题】On average, children still watch three hours of television a day, and calls to _______ the industry have resulted only in minor tweaks.
A.
articulate
B.
speculate
C.
regulate
D.
manipulate
【单选题】在732 K时反应NH4Cl(s)=NH3(g)+HCl(g)的ΔfGmΘ为-20.8 kJmol-1, ΔrHmΘ为154 kJmol-1, 则反应的ΔrSmΘ为:
A.
239 J×K-1×mol-1
B.
0.239 J×K-1×mol-1
C.
182 J×K-1×mol-1
D.
0.182 J×K-1×mol-1
【判断题】On average, children love up to 100 times a day, but Adults only love about 17 times a day.
A.
正确
B.
错误
【单选题】氧离曲线是( )
A.
PO2与血氧容量间关系的曲线
B.
PO2与血氧含量间关系的曲线
C.
PO2与血氧饱和度间关系的曲线
D.
PO2与血液pH间关系的曲线
E.
PO2与PCO2间关系的曲线
【单选题】在732 K时反应NH4Cl(s)=NH3(g)+HCl(g)的ΔfG 为-20.8 kJ×mol-1, ΔrH 为154 kJ×mol-1, 则反应的ΔrS 为:( )
A.
239 J×K-1×mol-1
B.
0.239 J×K-1×mol-1
C.
182 J×K-1×mol-1
D.
0.182 J×K-1×mol-1
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