Pick out the word that has the primary stress different from that of the other words.

A. guarantee

B. inhibit

C. illegal

D. invader

Around 150 B.C. the Greek astronomer Hipparchus developed a system to classify stars according to brightness

A. record

B. shine

C. categorize

D. diversify

The Bali Tiger was declared extinct in 1937 due to hunting and habitat loss.

A. reserve

B. generation

C. natural environment

D. diversity

Pick out the word that has the primary stress different from that of the other words.

A. genuine

B. kangaroo

C. generous

D. fortunate

I could see the finish line and thought I was home and dry.

A. hopeless

B. hopeful

C. successful

D. unsuccessful

It is really incredible that he is unaware of such basic facts.

A. difficult

B. unbelievable

C. imaginable

D. disappointed

The twins look so much alike that no one can tell them apart.

A. distinguish between them

B. point out with them

C. spoil them

D. pick them out

Pick out the word that has the primary stress different from that of the other words.

A. envelope

B. reluctant

C. regular

D. Sugar

Once in a while I visit my grandparents on the farm and stay there for some days.

A. Regularly

B. Sometimes

C. Usually

D. Rarely

Many scientists agree that global warming poses great threats to all species on Earth.

A. irritations

B. annoyances

C. fears

D. risks