Which choice BEST states the main idea of the passage?
There are likely many things about
echolocation that scientists have not yet
discovered.
Et
Echolocation research is important because
it has been used to develop devices such as
special walking sticks.
ea
on,
Early scientists did not have the necessary
knowledge or equipment to fully understand
echolocation.
Knowledge about echolocation and how the
process can be used to help people has
grown over time.

What logical prediction can be made from this passage?

Part b: which phrase from the text best support the answers to part a? a. “i don't want to talk to somebody when i go check in at an airport. i just either download the boarding pass to my phone or walk up to a kiosk and get it.” (paragraph 8) b. “you do not have to go far to find someone who disagrees with andrew mcafee, just around the corner to the office of another person at the same university.” (paragraph 11) c. “the set of things that machines do not do like humans is innumerable.” (paragraph 16) d. “you wonder if you're joining that long litany of voices who go down as having made the incorrect prediction one more time, but i think the facts are different this time.” (paragraph 23)

Which statement is an example of a complex sentence? a. although he denies them, dr. vasquez faced several scandals last year. b. people tend to use too many clauses in sentences that should be simple. c. cars tend to be expensive, but airplanes are in a price range of their own. d. i am in favor of proposition 1, and i am also in favor of proposition 16.