不管外界对大学英语四、六级考试有怎样的非议，每年的四、六级考试还是________地进行着，不少高校的学位证书仍然与大学英语四、六级考试挂钩着，大学英语四、六级考试成绩依然神气着……当大学英语四、六级考试________成只为一纸证书考试时，大学英语四、六级考试就已经变得________了。填入划横线部分最恰当的一项是（ ）。

大学英语（一）（二）（三）（四）课程考核和全国高等学校英语应用能力考试（A级）成绩以百分制记载，（）分为合格。全国大学生英语等级考试以710分制记载，（）分为合格。

A vessel proceeding along the bank of a river or channel has the tendency to（）.

假设参加计算机等级考试的学生关系R，参加英语等级考试的学生关系S。求既参加了计算机考试又参加了英语考试的学生，应当进行下列（）。

The man next door has a good _____ of going to bed at 10 p.m. every day.

The man next door has a good ______ of going to bed at 10 p.m. every day.

The man next door has a good______of going to bed at 10 p.m. every day.

（）is entitled to enter into，with a shipper，any agreement，stipulation，condition，reservation or exception as to the responsibility and liability of the carrier or the ship for the loss of or damage to，or in connection with，the custody and care and handling of the goods prior to the loading on，and subsequent to the discharge from，the ship on which the goods are carried by sea.

A salvor may be（）the whole or part of the payment due under Salvage Convention to the extent that the salvage operations have become necessary or more difficult because of fault or neglect on his part or if the salvor has been guilty of fraud or other dishonest conduct.

The（）may examine or re-examine the goods or take samples from them straightaway in the absence of the consignee or the consignor whenever it considers this necessary.

The Shipowner must not stow goods on deck（）there is a trade usage to that effect or the Charterer has given his express or implied consent.

已知“A、B二人中至少有一人懂英语”、“只有B刁懂英语，A才懂英语”和“A不懂英语并且B也不懂英语”这三个判断中，只有一个为真。据此，便可必然推出下列判断中为真的是（）。