Using the fool proof method that JY recommended. Your are panicking because you are still not familiar with the question the test asks. Do it again and again and again, till the end you are not even knowing what nervousness is, having a watch or not will not influence your performance, practice is the only way to eliminate panic.

it seems on iPad you just cannot adjust the speed, already used the method JY mentioned above~

same problem here, from iPad.

because we have to strengthen the conclusion that RO as a whole has no natural defense against the predator, just because RO raised in captivity were fed the same diet as RO in the wild, that does no mean RO in the wild do not have the defense against the predator.

like you, i chose D at a first glance but on a second thought, I chose back to B. I think there is one thing you should notice in Hampton's argument: he said the percentage of agricultural land to the whole land will not significantly increase by 2050. Since it is a percentage, if it increase a little, that does not guarantee the agricultural land will have to increase, what about the whole land decrease at the same time? If the latter scenario happens, the percentage still increases, but the agricultural land keeps the same. what do you think?

I think two sentences are important for you to understand this: first, BD are identified by whether or not lithium is present in their atmosphere; second, its lithium cannot be consumed; From the second one we know that lithium must exist in BD's atmosphere(because it cannot be consumed, then it must exist in the atmosphere); which means if this object is BD, then it must have lithium , which equals to if the object does not have lithium, it is not BD, that is exactly choice C's saying.

Hi J.Y., thank you very much and I have already received the email and begun the course.

Hi J.Y, I have signed up for the beta test, but where can I find the course?