帮我看几道英语选择题要正确率Lee holds his university's record for the 5K race.He has been training for the Olympics for the last several months,but _______ he can take six seconds off his speed,he won't qualify for the Olympic team.1whe

帮我看几道英语选择题要正确率Lee holds his university's record for the 5K race.He has been training for the Olympics for the last several months,but _______ he can take six seconds off his speed,he won't qualify for the Olympic team.1whe
帮我看几道英语选择题要正确率
Lee holds his university's record for the 5K race.He has been training for the Olympics for the last several months,but _______ he can take six seconds off his speed,he won't qualify for the Olympic team.
1whereas
2only if
3if
4unless
The ostrich is the largest bird in the world.Its only enemies are lions and humans.Even though _______,it can run very fast,up to 65 kilometers (about 43 miles) per hour,to escape predators.
1it lives on the plains and deserts of Africa
2it has black and white feathers
3it can live to be 70 years old
4it cannot fly
Emma hopes to attend law school next year,but the competition is intense.As an alternative,she'll also apply to a business school _________ she is not accepted by a law school.
1even though
2in case
3even if
4unless
This has been the hottest,driest summer we've had in years._______ it doesn't rain soon,the roses will die.
I1f
2Only if
3Even if
4Unless
A tourniquet is a strip of cloth you tie around an injured arm or leg to stop bleeding.It is a life-saving device that stops rapid blood loss.But using a tourniquet incorrectly can also cause injury.That's why a tourniquet should be applied _______ the loss of blood could be life-threatening.
1only if
2even if
3unless
4whether or not

帮我看几道英语选择题要正确率Lee holds his university's record for the 5K race.He has been training for the Olympics for the last several months,but _______ he can take six seconds off his speed,he won't qualify for the Olympic team.1whe
4 unless 除非
4 it cannot fly
2 in case
1 If
1 only if
保证正确率

2,1,2,1,4

1、4 2、4 3、2 4、1 5、4

4，4，2，1，1
最后一题不太确定，逻辑感觉有点奇怪
话说这题如果是高中的话那词汇量要求也太大了点，不过语法倒是不难。

1 4 2 1 3