P1: context of muralism：government promoted, but the theoretical foundations was formulated by the artists.

P2: important innovation in the art world.

P3: develop their own distinct styles.

P4: why stylish experiment.

hi Jrose, i agree with you to some degree, but Strengthen Q is about give more strength to the argument, i.e. supporting the validity of argument is enough, it is not necessary to ensure the validity of argument.

For SA Q, we need to ensure the validity of argument.

For PSA Q, we need to ensure the validity of argument to a lower degree than SA, but to a higher degree than Strengthen Q.

hope this can help.

ans B is right answer since in the passage, the author use the discovery of a means the atoms can be splited as an example, to illustrate sth.

ans D is wrong since the author is not take issue with sth (means oppose sth), but is illustrate sth.

hope it can help.

same here, i am interested~please massage me if you are available, thanks.

iam in

but cannot mean some.

there is a quiz list in syllabus to train your "unless" skill. try it and it really works.

haowenhui2012@.com,thanks

i am interested in~

me too, send me a pm

I am interested, here is my email address: haowenhui2012@.com.

same here, my PTs were attending 170+ but I really do not know why in real test I just got 158. I just do not know why, feel lost. Anyone has any advice? thanks in advance.

congratulations~🎊 you deserve it.

thank you guys for your supportive massages~

totally 100%.

yes i think so. “similar” means these two kinds of animals are analogous, so it can add strength of validity of the argument. "related" means the seal might be the predator of the related animal, so it can also add strength of validity, but not necessary.

thank you so much