1。
Question # 10, your answer = A, correct answer is C
A) The concert having been finished and the audience having filtered out, the maestro relaxed in the dressing room with the impresario.
B) Because the maestro had finished the concert and because the audience had been filtered out, he relaxed in the dressing room with the impresario.
C) Since the concert had been finished and the audience had filtered out, the maestro relaxed in the dressing room with the impresario.
D) Since the concert had finished and the audience had filtered out, the maestro had relaxed in the dressing room with the impresario.
E) The concert having been finished and the audience having filtered out, the maestro had relaxed in the dressing room with the impresario.
explainC) The subjects in the first part of the sentence, concert and
audience, are different from the subject in the second part of the sentence,
maestro. Consequently, the -ing phrase, a participial phrase, is dangling. There
is also a problem with the perfect tense; the present perfect is anterior to a
time in the present. Here, relaxed signals a time in the past.
My question is: I think A is right because of 独立主格结构
2。
Question # 9, your answer = B, correct answer isC
In Newtonian laws of motion, .
A) there is a condition and it's converse regarding bodies at rest and bodies in motion
B) there is a condition and its converse regarding bodies at rest and bodies in motion
C) there are a condition and its converse regarding bodies at rest and bodies in motion
D) there are a condition and it's converse regarding bodies at rest and bodies in motion
E) there has been a condition and its converse regarding bodies at rest and bodies in motion
Question: I remember "there is or there are" is decided by the first n. following "is/are"???
1. the explanation is clear. tense is inconsistent with main clause.
2. Subject: a condition and its converse .
sentence means: "according 牛顿运动定liu, wu ti de yun dong ji jin zhi shi yi zhong qing kuang ji xiang dui mai. "
C) The subjects in the first part of the sentence, concert and
audience, are different from the subject in the second part of the sentence,
maestro. Consequently, the -ing phrase, a participial phrase, is dangling. There
is also a problem with the perfect tense; the present perfect is anterior to a
time in the present. Here, relaxed signals a time in the past.
My question is: I think A is right because of 独立主格结构
2。
Question # 9, your answer = B, correct answer isC
In Newtonian laws of motion, 
