了解今日课堂：

ac 酸的(sour)

acid n.酸,酸类物质 a.酸的,酸味的，讽刺的

现学现用：“核酸”的英文是：

acetic a.

acidic a.

acidity n.

acidulous a.

act做(to do)

activist n.

activism n.

actualize v.

actuate v.

transact v.

acr 顶，高点，开端(top,beginning)

acrophobia n.　

acropolis n.

acu 尖(sharp)

acute a.

acuity n.

acumen n.

词根1.0 复习

1. am

amateur

amateurish

amour

ambition

amenable

amiable

2. ag

agenda

agent　

aggregate

agility

agglomerate

3. agri

agri

agriculture