no mean ______ = something that is difficult to do
11.
test of knowledge, especially an important one.
13.
“Much ___ about nothing.”as(またはis) a phrase to describe a situation in which there has been a lot of excitement about something that is not really important.
14.
[n] something you hope to achieve by doing something. [v] to try or intend to achieve something.
15.
the abbreviation of“ extravehicular activity”. abbreviation:省略形
17.
Symbol for“ platinum”. symbol:元素記号
18.
The initialism of“ International Atomic Energy Agency”.
20.
the abbreviation of“ Special referee”of soccer. abbreviation:省略形
21.
Symbol for“ manganese”. symbol:元素記号
22.
a very large mass of ice floating in the sea, most of which is under the surface of the water.