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【单选题】
商行为的特征是：( )A.
是商主体所为的以营利为目的的经营性行为
B.
是以交易为目的的一切行为
C.
商人和非商人所为的商业行为
D.
商行为是保密性的行为
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反馈参考答案：
举一反三
【单选题】下列弱酸或弱碱(设浓度为 0.1mol/L )能用酸碱滴定法直接准确滴定的是
A.
氨水 (Kb=1.8 × 10 -5 )
B.
苯酚 (Kb=1.1 × 10 -10 )
C.
NH4 ＋ (Ka=5.8 × 10 -10 )
D.
H3BO3 (Ka1=5.8 × 10-10 )
【单选题】下列对《秋兴八首》(其二)的理解和分析,不正确的一项是
A.
首联写夔州的暮景,寓情于景,通过一派凄凉景象,写出了身世飘零之感。
B.
颔联用张骞典故,说张骞还能有归期,而自己却只能孤舟长系,有家难回。
C.
尾联写月升中天,照应了首联的黄昏日落,委婉含蓄中蕴含了无限的情思。
D.
尾联以景结情,写月映芦荻花,表现了诗人从伤感到欣然愉悦的情感变化。
【单选题】下列弱酸或弱碱（设浓度为0.1mol/L）能用酸碱滴定法直接准确滴定的是
A.
氨水 (Kb=1.8×10 -5 )
B.
苯酚 (Kb=1.1×10 -10 )
C.
NH 4 +
D.
H 3 BO 3 (Ka=5.8×10 -10 )
【简答题】A．Carl won't have changed a lot. B．Carl won't be recognised by anyone. C．Carl will probably have changed much. D．Carl haven't seen him for six years.
【单选题】On that morning Carl W. Belgen, the preeminent American archaeologist of the time, opened a trench through an olive grove.
A.
greatest
B.
ancient
C.
traditional
D.
inexperienced
【简答题】That morning Carl came round a ________ and saw a dark green ________ in the middle of the road.
【单选题】If you go to Sydney and want to get there in the morning, which flight do you take?
A.
CA147.
B.
CA149.
C.
CA167.
【单选题】Do you know the man between _____? [ ]
A.
Carl and I
B.
I and Carl
C.
Carl and me
D.
me and Carl
【单选题】—Shall we hang out tomorrow morning? — ________ I’ll save the morning for my homework.
A.
Sorry, I can’t make it.
B.
Yes, it’s a good idea.
C.
Well, it all depends.
D.
No, that’s impossible.
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