1. No one has to read a textbook to learn that children's problem solving abilities improve ___ across childhood.

A) deliberately
B) dramatically
C) approximately
D) respectively
E) incidentally

2. The technique of glass-blowing was discovered by eraftsmen in Syria in about 30 BC and soon ___ by the Romans who used it to make bottles and other glass objects.

A) removed
B) excluded
C) adopted
D) delivered
E) unearthed