Melting point of Aspirin is about 136°C （bath fluid is heated at 130°C previously).

Fill in the blanks (a) through (g) for the Y Company for each of the income statements for 2017, 2018, and 2019. Y Company Income Statements For the years ended December 31 2017 2018 2019 Sales.......................................................... $7,500 $10,000 (f) Cost of goods sold.............................. Merchandise inventory (beginning).... (a) 375 750 Total cost of merchandise purchases... 2,400 3,625 4,875 Merchandise inventory (ending)... (b) 750 625 Cost of goods sold............... 2,770 (d)____ 5,000 Gross profit................... (c) 6,750 5,200 Operating expenses....... 3,750 3,750 (g)____ Net income $ 980 (e) $ 2,500 (a) (b) (c) (d) (e) (f) (g)

Sea turtles migrate across thousands of miles of ocean before returning to nest on the same stretch of coastline where they hatched, but how they do this has mystified scientists for more than fifty years. Sea turtles likely go to great lengths to find the places where they began life because successful nesting requires a combination of environmental features that are rare: soft sand, the right temperature, few predators, and an easily accessible beach. From this passage it is safe to conclude that sea turtles

A、are not easily observed by scientists.

B、cannot lay their eggs on any beach other than the one on which they hatched.

C、will not lay their eggs on beaches with pebbly sand.

D、must have the ability to precisely detect their location.

A、oxygen concentration.

B、glucose concentration.

C、the presence of fatty acids.

D、ion concentration.

A、travel by blood

B、spread by interstitial fluid

C、travel by neural axoplasm

D、autocrine

E、secreted through duct