1. Co-workers avoid saying anything that might ( 　) his anxiety.
(A) scour (B) confer (C) exacerbate (D) abbreviate
2. The air was dry since there had been no (　　 ) for weeks.
(A) secession (B) dimension (C) contradiction (D) precipitation
3. This chart shows economic (　 ) between different regions.
(A) formulas (B) viaducts (C) disparities (D) commissions
4. NaCl (　 ) sodium chloride, or common salt.
(A) peddles (B) procures (C) signifies (D) dismantles
5. The physicist was so (　 ) that he doubted almost everything.
(A) seismic (B) specific (C) synthetic (D) skeptical
6. Don’t get (　 ) away or you might spend too much money.
(A) edged (B) carried (C) stamped (D) peddled